19940960

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{9587}}^1$

素因数の和:9615

約数の個数: 48

約数和(自身を含む): 50739696

約数和(自身を除く): 30798736

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 9587, 19174, 38348, 47935, 76696, 95870, 124631, 153392, 191740, 249262, 306784, 383480, 498524, 623155, 766960, 997048, 1246310, 1533920, 1994096, 2492620, 3988192, 4985240, 9970480, 19940960]

約数ペア:

[(1, 19940960), (2, 9970480), (4, 4985240), (5, 3988192), (8, 2492620), (10, 1994096), (13, 1533920), (16, 1246310), (20, 997048), (26, 766960), (32, 623155), (40, 498524), (52, 383480), (65, 306784), (80, 249262), (104, 191740), (130, 153392), (160, 124631), (208, 95870), (260, 76696), (416, 47935), (520, 38348), (1040, 19174), (2080, 9587)]