15978020

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{25771}}^1$

素因数の和:25811

約数の個数: 24

約数和(自身を含む): 34637568

約数和(自身を除く): 18659548

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 25771, 51542, 103084, 128855, 257710, 515420, 798901, 1597802, 3195604, 3994505, 7989010, 15978020]

約数ペア:

[(1, 15978020), (2, 7989010), (4, 3994505), (5, 3195604), (10, 1597802), (20, 798901), (31, 515420), (62, 257710), (124, 128855), (155, 103084), (310, 51542), (620, 25771)]