81293940

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{709}}^1$

素因数の和:751

約数の個数: 216

約数和(自身を含む): 309352680

約数和(自身を除く): 228058740

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 13, 14, 15, 18, 20, 21, 26, 28, 30, 35, 36, 39, 42, 45, 49, 52, 60, 63, 65, 70, 78, 84, 90, 91, 98, 105, 117, 126, 130, 140, 147, 156, 180, 182, 195, 196, 210, 234, 245, 252, 260, 273, 294, 315, 364, 390, 420, 441, 455, 468, 490, 546, 585, 588, 630, 637, 709, 735, 780, 819, 882, 910, 980, 1092, 1170, 1260, 1274, 1365, 1418, 1470, 1638, 1764, 1820, 1911, 2127, 2205, 2340, 2548, 2730, 2836, 2940, 3185, 3276, 3545, 3822, 4095, 4254, 4410, 4963, 5460, 5733, 6370, 6381, 7090, 7644, 8190, 8508, 8820, 9217, 9555, 9926, 10635, 11466, 12740, 12762, 14180, 14889, 16380, 18434, 19110, 19852, 21270, 22932, 24815, 25524, 27651, 28665, 29778, 31905, 34741, 36868, 38220, 42540, 44667, 46085, 49630, 55302, 57330, 59556, 63810, 64519, 69482, 74445, 82953, 89334, 92170, 99260, 104223, 110604, 114660, 127620, 129038, 138255, 138964, 148890, 165906, 173705, 178668, 184340, 193557, 208446, 223335, 258076, 276510, 297780, 312669, 322595, 331812, 347410, 387114, 414765, 416892, 446670, 451633, 521115, 553020, 580671, 625338, 645190, 694820, 774228, 829530, 893340, 903266, 967785, 1042230, 1161342, 1250676, 1290380, 1354899, 1563345, 1659060, 1806532, 1935570, 2084460, 2258165, 2322684, 2709798, 2903355, 3126690, 3871140, 4064697, 4516330, 5419596, 5806710, 6253380, 6774495, 8129394, 9032660, 11613420, 13548990, 16258788, 20323485, 27097980, 40646970, 81293940]

約数ペア:

[(1, 81293940), (2, 40646970), (3, 27097980), (4, 20323485), (5, 16258788), (6, 13548990), (7, 11613420), (9, 9032660), (10, 8129394), (12, 6774495), (13, 6253380), (14, 5806710), (15, 5419596), (18, 4516330), (20, 4064697), (21, 3871140), (26, 3126690), (28, 2903355), (30, 2709798), (35, 2322684), (36, 2258165), (39, 2084460), (42, 1935570), (45, 1806532), (49, 1659060), (52, 1563345), (60, 1354899), (63, 1290380), (65, 1250676), (70, 1161342), (78, 1042230), (84, 967785), (90, 903266), (91, 893340), (98, 829530), (105, 774228), (117, 694820), (126, 645190), (130, 625338), (140, 580671), (147, 553020), (156, 521115), (180, 451633), (182, 446670), (195, 416892), (196, 414765), (210, 387114), (234, 347410), (245, 331812), (252, 322595), (260, 312669), (273, 297780), (294, 276510), (315, 258076), (364, 223335), (390, 208446), (420, 193557), (441, 184340), (455, 178668), (468, 173705), (490, 165906), (546, 148890), (585, 138964), (588, 138255), (630, 129038), (637, 127620), (709, 114660), (735, 110604), (780, 104223), (819, 99260), (882, 92170), (910, 89334), (980, 82953), (1092, 74445), (1170, 69482), (1260, 64519), (1274, 63810), (1365, 59556), (1418, 57330), (1470, 55302), (1638, 49630), (1764, 46085), (1820, 44667), (1911, 42540), (2127, 38220), (2205, 36868), (2340, 34741), (2548, 31905), (2730, 29778), (2836, 28665), (2940, 27651), (3185, 25524), (3276, 24815), (3545, 22932), (3822, 21270), (4095, 19852), (4254, 19110), (4410, 18434), (4963, 16380), (5460, 14889), (5733, 14180), (6370, 12762), (6381, 12740), (7090, 11466), (7644, 10635), (8190, 9926), (8508, 9555), (8820, 9217)]