21288860

素因数分解:

$2^2\times 5^1\times {\mathrm{191}}^1\times {\mathrm{5573}}^1$

素因数の和:5773

約数の個数: 24

約数和(自身を含む): 44948736

約数和(自身を除く): 23659876

約数列:

[1, 2, 4, 5, 10, 20, 191, 382, 764, 955, 1910, 3820, 5573, 11146, 22292, 27865, 55730, 111460, 1064443, 2128886, 4257772, 5322215, 10644430, 21288860]

約数ペア:

[(1, 21288860), (2, 10644430), (4, 5322215), (5, 4257772), (10, 2128886), (20, 1064443), (191, 111460), (382, 55730), (764, 27865), (955, 22292), (1910, 11146), (3820, 5573)]