257186540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{1877}}^1$

素因数の和:1947

約数の個数: 96

約数和(自身を含む): 636056064

約数和(自身を除く): 378869524

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 31, 34, 52, 62, 65, 68, 85, 124, 130, 155, 170, 221, 260, 310, 340, 403, 442, 527, 620, 806, 884, 1054, 1105, 1612, 1877, 2015, 2108, 2210, 2635, 3754, 4030, 4420, 5270, 6851, 7508, 8060, 9385, 10540, 13702, 18770, 24401, 27404, 31909, 34255, 37540, 48802, 58187, 63818, 68510, 97604, 116374, 122005, 127636, 137020, 159545, 232748, 244010, 290935, 319090, 414817, 488020, 581870, 638180, 756431, 829634, 989179, 1163740, 1512862, 1659268, 1978358, 2074085, 3025724, 3782155, 3956716, 4148170, 4945895, 7564310, 8296340, 9891790, 12859327, 15128620, 19783580, 25718654, 51437308, 64296635, 128593270, 257186540]

約数ペア:

[(1, 257186540), (2, 128593270), (4, 64296635), (5, 51437308), (10, 25718654), (13, 19783580), (17, 15128620), (20, 12859327), (26, 9891790), (31, 8296340), (34, 7564310), (52, 4945895), (62, 4148170), (65, 3956716), (68, 3782155), (85, 3025724), (124, 2074085), (130, 1978358), (155, 1659268), (170, 1512862), (221, 1163740), (260, 989179), (310, 829634), (340, 756431), (403, 638180), (442, 581870), (527, 488020), (620, 414817), (806, 319090), (884, 290935), (1054, 244010), (1105, 232748), (1612, 159545), (1877, 137020), (2015, 127636), (2108, 122005), (2210, 116374), (2635, 97604), (3754, 68510), (4030, 63818), (4420, 58187), (5270, 48802), (6851, 37540), (7508, 34255), (8060, 31909), (9385, 27404), (10540, 24401), (13702, 18770)]