1979771600

素因数分解:

$2^4\times 5^2\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1$

素因数の和:218

約数の個数: 240

約数和(自身を含む): 5195857920

約数和(自身を除く): 3216086320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 40, 43, 47, 50, 62, 79, 80, 86, 94, 100, 124, 155, 158, 172, 188, 200, 215, 235, 248, 310, 316, 344, 376, 395, 400, 430, 470, 496, 620, 632, 688, 752, 775, 790, 860, 940, 1075, 1175, 1240, 1264, 1333, 1457, 1550, 1580, 1720, 1880, 1975, 2021, 2150, 2350, 2449, 2480, 2666, 2914, 3100, 3160, 3397, 3440, 3713, 3760, 3950, 4042, 4300, 4700, 4898, 5332, 5828, 6200, 6320, 6665, 6794, 7285, 7426, 7900, 8084, 8600, 9400, 9796, 10105, 10664, 11656, 12245, 12400, 13330, 13588, 14570, 14852, 15800, 16168, 16985, 17200, 18565, 18800, 19592, 20210, 21328, 23312, 24490, 26660, 27176, 29140, 29704, 31600, 32336, 33325, 33970, 36425, 37130, 39184, 40420, 48980, 50525, 53320, 54352, 58280, 59408, 61225, 62651, 66650, 67940, 72850, 74260, 80840, 84925, 92825, 97960, 101050, 105307, 106640, 115103, 116560, 122450, 125302, 133300, 135880, 145700, 148520, 159659, 161680, 169850, 185650, 195920, 202100, 210614, 230206, 244900, 250604, 266600, 271760, 291400, 297040, 313255, 319318, 339700, 371300, 404200, 421228, 460412, 489800, 501208, 526535, 533200, 575515, 582800, 626510, 638636, 679400, 742600, 798295, 808400, 842456, 920824, 979600, 1002416, 1053070, 1151030, 1253020, 1277272, 1358800, 1485200, 1566275, 1596590, 1684912, 1841648, 2106140, 2302060, 2506040, 2554544, 2632675, 2877575, 3132550, 3193180, 3991475, 4212280, 4604120, 4949429, 5012080, 5265350, 5755150, 6265100, 6386360, 7982950, 8424560, 9208240, 9898858, 10530700, 11510300, 12530200, 12772720, 15965900, 19797716, 21061400, 23020600, 24747145, 25060400, 31931800, 39595432, 42122800, 46041200, 49494290, 63863600, 79190864, 98988580, 123735725, 197977160, 247471450, 395954320, 494942900, 989885800, 1979771600]

約数ペア:

[(1, 1979771600), (2, 989885800), (4, 494942900), (5, 395954320), (8, 247471450), (10, 197977160), (16, 123735725), (20, 98988580), (25, 79190864), (31, 63863600), (40, 49494290), (43, 46041200), (47, 42122800), (50, 39595432), (62, 31931800), (79, 25060400), (80, 24747145), (86, 23020600), (94, 21061400), (100, 19797716), (124, 15965900), (155, 12772720), (158, 12530200), (172, 11510300), (188, 10530700), (200, 9898858), (215, 9208240), (235, 8424560), (248, 7982950), (310, 6386360), (316, 6265100), (344, 5755150), (376, 5265350), (395, 5012080), (400, 4949429), (430, 4604120), (470, 4212280), (496, 3991475), (620, 3193180), (632, 3132550), (688, 2877575), (752, 2632675), (775, 2554544), (790, 2506040), (860, 2302060), (940, 2106140), (1075, 1841648), (1175, 1684912), (1240, 1596590), (1264, 1566275), (1333, 1485200), (1457, 1358800), (1550, 1277272), (1580, 1253020), (1720, 1151030), (1880, 1053070), (1975, 1002416), (2021, 979600), (2150, 920824), (2350, 842456), (2449, 808400), (2480, 798295), (2666, 742600), (2914, 679400), (3100, 638636), (3160, 626510), (3397, 582800), (3440, 575515), (3713, 533200), (3760, 526535), (3950, 501208), (4042, 489800), (4300, 460412), (4700, 421228), (4898, 404200), (5332, 371300), (5828, 339700), (6200, 319318), (6320, 313255), (6665, 297040), (6794, 291400), (7285, 271760), (7426, 266600), (7900, 250604), (8084, 244900), (8600, 230206), (9400, 210614), (9796, 202100), (10105, 195920), (10664, 185650), (11656, 169850), (12245, 161680), (12400, 159659), (13330, 148520), (13588, 145700), (14570, 135880), (14852, 133300), (15800, 125302), (16168, 122450), (16985, 116560), (17200, 115103), (18565, 106640), (18800, 105307), (19592, 101050), (20210, 97960), (21328, 92825), (23312, 84925), (24490, 80840), (26660, 74260), (27176, 72850), (29140, 67940), (29704, 66650), (31600, 62651), (32336, 61225), (33325, 59408), (33970, 58280), (36425, 54352), (37130, 53320), (39184, 50525), (40420, 48980)]