257815220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{1103}}^1$

素因数の和:1185

約数の個数: 96

約数和(自身を含む): 623185920

約数和(自身を除く): 365370700

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 29, 31, 52, 58, 62, 65, 116, 124, 130, 145, 155, 260, 290, 310, 377, 403, 580, 620, 754, 806, 899, 1103, 1508, 1612, 1798, 1885, 2015, 2206, 3596, 3770, 4030, 4412, 4495, 5515, 7540, 8060, 8990, 11030, 11687, 14339, 17980, 22060, 23374, 28678, 31987, 34193, 46748, 57356, 58435, 63974, 68386, 71695, 116870, 127948, 136772, 143390, 159935, 170965, 233740, 286780, 319870, 341930, 415831, 444509, 639740, 683860, 831662, 889018, 991597, 1663324, 1778036, 1983194, 2079155, 2222545, 3966388, 4158310, 4445090, 4957985, 8316620, 8890180, 9915970, 12890761, 19831940, 25781522, 51563044, 64453805, 128907610, 257815220]

約数ペア:

[(1, 257815220), (2, 128907610), (4, 64453805), (5, 51563044), (10, 25781522), (13, 19831940), (20, 12890761), (26, 9915970), (29, 8890180), (31, 8316620), (52, 4957985), (58, 4445090), (62, 4158310), (65, 3966388), (116, 2222545), (124, 2079155), (130, 1983194), (145, 1778036), (155, 1663324), (260, 991597), (290, 889018), (310, 831662), (377, 683860), (403, 639740), (580, 444509), (620, 415831), (754, 341930), (806, 319870), (899, 286780), (1103, 233740), (1508, 170965), (1612, 159935), (1798, 143390), (1885, 136772), (2015, 127948), (2206, 116870), (3596, 71695), (3770, 68386), (4030, 63974), (4412, 58435), (4495, 57356), (5515, 46748), (7540, 34193), (8060, 31987), (8990, 28678), (11030, 23374), (11687, 22060), (14339, 17980)]