12780280

素因数分解:

$2^3\times 5^1\times {\mathrm{283}}^1\times {\mathrm{1129}}^1$

素因数の和:1423

約数の個数: 32

約数和(自身を含む): 28882800

約数和(自身を除く): 16102520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 283, 566, 1129, 1132, 1415, 2258, 2264, 2830, 4516, 5645, 5660, 9032, 11290, 11320, 22580, 45160, 319507, 639014, 1278028, 1597535, 2556056, 3195070, 6390140, 12780280]

約数ペア:

[(1, 12780280), (2, 6390140), (4, 3195070), (5, 2556056), (8, 1597535), (10, 1278028), (20, 639014), (40, 319507), (283, 45160), (566, 22580), (1129, 11320), (1132, 11290), (1415, 9032), (2258, 5660), (2264, 5645), (2830, 4516)]