15978280

素因数分解:

$2^3\times 5^1\times {\mathrm{173}}^1\times {\mathrm{2309}}^1$

素因数の和:2493

約数の個数: 32

約数和(自身を含む): 36174600

約数和(自身を除く): 20196320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 173, 346, 692, 865, 1384, 1730, 2309, 3460, 4618, 6920, 9236, 11545, 18472, 23090, 46180, 92360, 399457, 798914, 1597828, 1997285, 3195656, 3994570, 7989140, 15978280]

約数ペア:

[(1, 15978280), (2, 7989140), (4, 3994570), (5, 3195656), (8, 1997285), (10, 1597828), (20, 798914), (40, 399457), (173, 92360), (346, 46180), (692, 23090), (865, 18472), (1384, 11545), (1730, 9236), (2309, 6920), (3460, 4618)]