20404840

素因数分解:

$2^3\times 5^1\times {\mathrm{510121}}^1$

素因数の和:510132

約数の個数: 16

約数和(自身を含む): 45910980

約数和(自身を除く): 25506140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 510121, 1020242, 2040484, 2550605, 4080968, 5101210, 10202420, 20404840]

約数ペア:

[(1, 20404840), (2, 10202420), (4, 5101210), (5, 4080968), (8, 2550605), (10, 2040484), (20, 1020242), (40, 510121)]