15999940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{72727}}^1$

素因数の和:72747

約数の個数: 24

約数和(自身を含む): 36654912

約数和(自身を除く): 20654972

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 72727, 145454, 290908, 363635, 727270, 799997, 1454540, 1599994, 3199988, 3999985, 7999970, 15999940]

約数ペア:

[(1, 15999940), (2, 7999970), (4, 3999985), (5, 3199988), (10, 1599994), (11, 1454540), (20, 799997), (22, 727270), (44, 363635), (55, 290908), (110, 145454), (220, 72727)]