989668880

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1\times {\mathrm{1459}}^1$

素因数の和:1672

約数の個数: 80

約数和(自身を含む): 2357140800

約数和(自身を除く): 1367471920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 139, 244, 278, 305, 488, 556, 610, 695, 976, 1112, 1220, 1390, 1459, 2224, 2440, 2780, 2918, 4880, 5560, 5836, 7295, 8479, 11120, 11672, 14590, 16958, 23344, 29180, 33916, 42395, 58360, 67832, 84790, 88999, 116720, 135664, 169580, 177998, 202801, 339160, 355996, 405602, 444995, 678320, 711992, 811204, 889990, 1014005, 1423984, 1622408, 1779980, 2028010, 3244816, 3559960, 4056020, 7119920, 8112040, 12370861, 16224080, 24741722, 49483444, 61854305, 98966888, 123708610, 197933776, 247417220, 494834440, 989668880]

約数ペア:

[(1, 989668880), (2, 494834440), (4, 247417220), (5, 197933776), (8, 123708610), (10, 98966888), (16, 61854305), (20, 49483444), (40, 24741722), (61, 16224080), (80, 12370861), (122, 8112040), (139, 7119920), (244, 4056020), (278, 3559960), (305, 3244816), (488, 2028010), (556, 1779980), (610, 1622408), (695, 1423984), (976, 1014005), (1112, 889990), (1220, 811204), (1390, 711992), (1459, 678320), (2224, 444995), (2440, 405602), (2780, 355996), (2918, 339160), (4880, 202801), (5560, 177998), (5836, 169580), (7295, 135664), (8479, 116720), (11120, 88999), (11672, 84790), (14590, 67832), (16958, 58360), (23344, 42395), (29180, 33916)]