21322550

素因数分解:

$2^1\times 5^2\times {\mathrm{61}}^1\times {\mathrm{6991}}^1$

素因数の和:7064

約数の個数: 24

約数和(自身を含む): 40315872

約数和(自身を除く): 18993322

約数列:

[1, 2, 5, 10, 25, 50, 61, 122, 305, 610, 1525, 3050, 6991, 13982, 34955, 69910, 174775, 349550, 426451, 852902, 2132255, 4264510, 10661275, 21322550]

約数ペア:

[(1, 21322550), (2, 10661275), (5, 4264510), (10, 2132255), (25, 852902), (50, 426451), (61, 349550), (122, 174775), (305, 69910), (610, 34955), (1525, 13982), (3050, 6991)]