21085521910

素因数分解:

$2^1\times 5^1\times {\mathrm{8599}}^1\times {\mathrm{245209}}^1$

素因数の和:253815

約数の個数: 16

約数和(自身を含む): 37958508000

約数和(自身を除く): 16872986090

約数列:

[1, 2, 5, 10, 8599, 17198, 42995, 85990, 245209, 490418, 1226045, 2452090, 2108552191, 4217104382, 10542760955, 21085521910]

約数ペア:

[(1, 21085521910), (2, 10542760955), (5, 4217104382), (10, 2108552191), (8599, 2452090), (17198, 1226045), (42995, 490418), (85990, 245209)]