20726920

素因数分解:

$2^3\times 5^1\times {\mathrm{283}}^1\times {\mathrm{1831}}^1$

素因数の和:2125

約数の個数: 32

約数和(自身を含む): 46825920

約数和(自身を除く): 26099000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 283, 566, 1132, 1415, 1831, 2264, 2830, 3662, 5660, 7324, 9155, 11320, 14648, 18310, 36620, 73240, 518173, 1036346, 2072692, 2590865, 4145384, 5181730, 10363460, 20726920]

約数ペア:

[(1, 20726920), (2, 10363460), (4, 5181730), (5, 4145384), (8, 2590865), (10, 2072692), (20, 1036346), (40, 518173), (283, 73240), (566, 36620), (1132, 18310), (1415, 14648), (1831, 11320), (2264, 9155), (2830, 7324), (3662, 5660)]