257156740

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{317}}^1\times {\mathrm{863}}^1$

素因数の和:1236

約数の個数: 48

約数和(自身を含む): 553900032

約数和(自身を除く): 296743292

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 317, 470, 634, 863, 940, 1268, 1585, 1726, 3170, 3452, 4315, 6340, 8630, 14899, 17260, 29798, 40561, 59596, 74495, 81122, 148990, 162244, 202805, 273571, 297980, 405610, 547142, 811220, 1094284, 1367855, 2735710, 5471420, 12857837, 25715674, 51431348, 64289185, 128578370, 257156740]

約数ペア:

[(1, 257156740), (2, 128578370), (4, 64289185), (5, 51431348), (10, 25715674), (20, 12857837), (47, 5471420), (94, 2735710), (188, 1367855), (235, 1094284), (317, 811220), (470, 547142), (634, 405610), (863, 297980), (940, 273571), (1268, 202805), (1585, 162244), (1726, 148990), (3170, 81122), (3452, 74495), (4315, 59596), (6340, 40561), (8630, 29798), (14899, 17260)]