31495960

素因数分解:

$2^3\times 5^1\times {\mathrm{647}}^1\times {\mathrm{1217}}^1$

素因数の和:1875

約数の個数: 32

約数和(自身を含む): 71033760

約数和(自身を除く): 39537800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 647, 1217, 1294, 2434, 2588, 3235, 4868, 5176, 6085, 6470, 9736, 12170, 12940, 24340, 25880, 48680, 787399, 1574798, 3149596, 3936995, 6299192, 7873990, 15747980, 31495960]

約数ペア:

[(1, 31495960), (2, 15747980), (4, 7873990), (5, 6299192), (8, 3936995), (10, 3149596), (20, 1574798), (40, 787399), (647, 48680), (1217, 25880), (1294, 24340), (2434, 12940), (2588, 12170), (3235, 9736), (4868, 6470), (5176, 6085)]