3987920

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{631}}^1$

素因数の和:723

約数の個数: 40

約数和(自身を含む): 9404160

約数和(自身を除く): 5416240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 316, 395, 631, 632, 790, 1262, 1264, 1580, 2524, 3155, 3160, 5048, 6310, 6320, 10096, 12620, 25240, 49849, 50480, 99698, 199396, 249245, 398792, 498490, 797584, 996980, 1993960, 3987920]

約数ペア:

[(1, 3987920), (2, 1993960), (4, 996980), (5, 797584), (8, 498490), (10, 398792), (16, 249245), (20, 199396), (40, 99698), (79, 50480), (80, 49849), (158, 25240), (316, 12620), (395, 10096), (631, 6320), (632, 6310), (790, 5048), (1262, 3160), (1264, 3155), (1580, 2524)]