280090040

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{191}}^1\times {\mathrm{601}}^1$

素因数の和:864

約数の個数: 64

約数和(自身を含む): 644958720

約数和(自身を除く): 364868680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 191, 244, 305, 382, 488, 601, 610, 764, 955, 1202, 1220, 1528, 1910, 2404, 2440, 3005, 3820, 4808, 6010, 7640, 11651, 12020, 23302, 24040, 36661, 46604, 58255, 73322, 93208, 114791, 116510, 146644, 183305, 229582, 233020, 293288, 366610, 459164, 466040, 573955, 733220, 918328, 1147910, 1466440, 2295820, 4591640, 7002251, 14004502, 28009004, 35011255, 56018008, 70022510, 140045020, 280090040]

約数ペア:

[(1, 280090040), (2, 140045020), (4, 70022510), (5, 56018008), (8, 35011255), (10, 28009004), (20, 14004502), (40, 7002251), (61, 4591640), (122, 2295820), (191, 1466440), (244, 1147910), (305, 918328), (382, 733220), (488, 573955), (601, 466040), (610, 459164), (764, 366610), (955, 293288), (1202, 233020), (1220, 229582), (1528, 183305), (1910, 146644), (2404, 116510), (2440, 114791), (3005, 93208), (3820, 73322), (4808, 58255), (6010, 46604), (7640, 36661), (11651, 24040), (12020, 23302)]