1993960

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{631}}^1$

素因数の和:721

約数の個数: 32

約数和(自身を含む): 4550400

約数和(自身を除く): 2556440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 631, 632, 790, 1262, 1580, 2524, 3155, 3160, 5048, 6310, 12620, 25240, 49849, 99698, 199396, 249245, 398792, 498490, 996980, 1993960]

約数ペア:

[(1, 1993960), (2, 996980), (4, 498490), (5, 398792), (8, 249245), (10, 199396), (20, 99698), (40, 49849), (79, 25240), (158, 12620), (316, 6310), (395, 5048), (631, 3160), (632, 3155), (790, 2524), (1262, 1580)]