251321280

素因数分解:

$2^6\times 3^1\times 5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{251}}^1$

素因数の和:427

約数の個数: 224

約数和(自身を含む): 921715200

約数和(自身を除く): 670393920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 56, 60, 64, 70, 80, 84, 96, 105, 112, 120, 140, 149, 160, 168, 192, 210, 224, 240, 251, 280, 298, 320, 336, 420, 447, 448, 480, 502, 560, 596, 672, 745, 753, 840, 894, 960, 1004, 1043, 1120, 1192, 1255, 1344, 1490, 1506, 1680, 1757, 1788, 2008, 2086, 2235, 2240, 2384, 2510, 2980, 3012, 3129, 3360, 3514, 3576, 3765, 4016, 4172, 4470, 4768, 5020, 5215, 5271, 5960, 6024, 6258, 6720, 7028, 7152, 7530, 8032, 8344, 8785, 8940, 9536, 10040, 10430, 10542, 11920, 12048, 12516, 14056, 14304, 15060, 15645, 16064, 16688, 17570, 17880, 20080, 20860, 21084, 23840, 24096, 25032, 26355, 28112, 28608, 30120, 31290, 33376, 35140, 35760, 37399, 40160, 41720, 42168, 47680, 48192, 50064, 52710, 56224, 60240, 62580, 66752, 70280, 71520, 74798, 80320, 83440, 84336, 100128, 105420, 112197, 112448, 120480, 125160, 140560, 143040, 149596, 166880, 168672, 186995, 200256, 210840, 224394, 240960, 250320, 261793, 281120, 299192, 333760, 337344, 373990, 421680, 448788, 500640, 523586, 560985, 562240, 598384, 747980, 785379, 843360, 897576, 1001280, 1047172, 1121970, 1196768, 1308965, 1495960, 1570758, 1686720, 1795152, 2094344, 2243940, 2393536, 2617930, 2991920, 3141516, 3590304, 3926895, 4188688, 4487880, 5235860, 5983840, 6283032, 7180608, 7853790, 8377376, 8975760, 10471720, 11967680, 12566064, 15707580, 16754752, 17951520, 20943440, 25132128, 31415160, 35903040, 41886880, 50264256, 62830320, 83773760, 125660640, 251321280]

約数ペア:

[(1, 251321280), (2, 125660640), (3, 83773760), (4, 62830320), (5, 50264256), (6, 41886880), (7, 35903040), (8, 31415160), (10, 25132128), (12, 20943440), (14, 17951520), (15, 16754752), (16, 15707580), (20, 12566064), (21, 11967680), (24, 10471720), (28, 8975760), (30, 8377376), (32, 7853790), (35, 7180608), (40, 6283032), (42, 5983840), (48, 5235860), (56, 4487880), (60, 4188688), (64, 3926895), (70, 3590304), (80, 3141516), (84, 2991920), (96, 2617930), (105, 2393536), (112, 2243940), (120, 2094344), (140, 1795152), (149, 1686720), (160, 1570758), (168, 1495960), (192, 1308965), (210, 1196768), (224, 1121970), (240, 1047172), (251, 1001280), (280, 897576), (298, 843360), (320, 785379), (336, 747980), (420, 598384), (447, 562240), (448, 560985), (480, 523586), (502, 500640), (560, 448788), (596, 421680), (672, 373990), (745, 337344), (753, 333760), (840, 299192), (894, 281120), (960, 261793), (1004, 250320), (1043, 240960), (1120, 224394), (1192, 210840), (1255, 200256), (1344, 186995), (1490, 168672), (1506, 166880), (1680, 149596), (1757, 143040), (1788, 140560), (2008, 125160), (2086, 120480), (2235, 112448), (2240, 112197), (2384, 105420), (2510, 100128), (2980, 84336), (3012, 83440), (3129, 80320), (3360, 74798), (3514, 71520), (3576, 70280), (3765, 66752), (4016, 62580), (4172, 60240), (4470, 56224), (4768, 52710), (5020, 50064), (5215, 48192), (5271, 47680), (5960, 42168), (6024, 41720), (6258, 40160), (6720, 37399), (7028, 35760), (7152, 35140), (7530, 33376), (8032, 31290), (8344, 30120), (8785, 28608), (8940, 28112), (9536, 26355), (10040, 25032), (10430, 24096), (10542, 23840), (11920, 21084), (12048, 20860), (12516, 20080), (14056, 17880), (14304, 17570), (15060, 16688), (15645, 16064)]