18863990

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{163}}^2$

素因数の和:404

約数の個数: 24

約数和(自身を含む): 34645968

約数和(自身を除く): 15781978

約数列:

[1, 2, 5, 10, 71, 142, 163, 326, 355, 710, 815, 1630, 11573, 23146, 26569, 53138, 57865, 115730, 132845, 265690, 1886399, 3772798, 9431995, 18863990]

約数ペア:

[(1, 18863990), (2, 9431995), (5, 3772798), (10, 1886399), (71, 265690), (142, 132845), (163, 115730), (326, 57865), (355, 53138), (710, 26569), (815, 23146), (1630, 11573)]