21000539960

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{30883147}}^1$

素因数の和:30883175

約数の個数: 32

約数和(自身を含む): 50030699760

約数和(自身を除く): 29030159800

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 30883147, 61766294, 123532588, 154415735, 247065176, 308831470, 525013499, 617662940, 1050026998, 1235325880, 2100053996, 2625067495, 4200107992, 5250134990, 10500269980, 21000539960]

約数ペア:

[(1, 21000539960), (2, 10500269980), (4, 5250134990), (5, 4200107992), (8, 2625067495), (10, 2100053996), (17, 1235325880), (20, 1050026998), (34, 617662940), (40, 525013499), (68, 308831470), (85, 247065176), (136, 154415735), (170, 123532588), (340, 61766294), (680, 30883147)]