40890520

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{199}}^1\times {\mathrm{467}}^1$

素因数の和:688

約数の個数: 64

約数和(自身を含む): 101088000

約数和(自身を除く): 60197480

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 199, 220, 398, 440, 467, 796, 934, 995, 1592, 1868, 1990, 2189, 2335, 3736, 3980, 4378, 4670, 5137, 7960, 8756, 9340, 10274, 10945, 17512, 18680, 20548, 21890, 25685, 41096, 43780, 51370, 87560, 92933, 102740, 185866, 205480, 371732, 464665, 743464, 929330, 1022263, 1858660, 2044526, 3717320, 4089052, 5111315, 8178104, 10222630, 20445260, 40890520]

約数ペア:

[(1, 40890520), (2, 20445260), (4, 10222630), (5, 8178104), (8, 5111315), (10, 4089052), (11, 3717320), (20, 2044526), (22, 1858660), (40, 1022263), (44, 929330), (55, 743464), (88, 464665), (110, 371732), (199, 205480), (220, 185866), (398, 102740), (440, 92933), (467, 87560), (796, 51370), (934, 43780), (995, 41096), (1592, 25685), (1868, 21890), (1990, 20548), (2189, 18680), (2335, 17512), (3736, 10945), (3980, 10274), (4378, 9340), (4670, 8756), (5137, 7960)]