21222760

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{40813}}^1$

素因数の和:40837

約数の個数: 32

約数和(自身を含む): 51425640

約数和(自身を除く): 30202880

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 40813, 81626, 163252, 204065, 326504, 408130, 530569, 816260, 1061138, 1632520, 2122276, 2652845, 4244552, 5305690, 10611380, 21222760]

約数ペア:

[(1, 21222760), (2, 10611380), (4, 5305690), (5, 4244552), (8, 2652845), (10, 2122276), (13, 1632520), (20, 1061138), (26, 816260), (40, 530569), (52, 408130), (65, 326504), (104, 204065), (130, 163252), (260, 81626), (520, 40813)]