257202040

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^2\times {\mathrm{6691}}^1$

素因数の和:6764

約数の個数: 48

約数和(自身を含む): 598064040

約数和(自身を除く): 340862000

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 961, 1240, 1922, 3844, 4805, 6691, 7688, 9610, 13382, 19220, 26764, 33455, 38440, 53528, 66910, 133820, 207421, 267640, 414842, 829684, 1037105, 1659368, 2074210, 4148420, 6430051, 8296840, 12860102, 25720204, 32150255, 51440408, 64300510, 128601020, 257202040]

約数ペア:

[(1, 257202040), (2, 128601020), (4, 64300510), (5, 51440408), (8, 32150255), (10, 25720204), (20, 12860102), (31, 8296840), (40, 6430051), (62, 4148420), (124, 2074210), (155, 1659368), (248, 1037105), (310, 829684), (620, 414842), (961, 267640), (1240, 207421), (1922, 133820), (3844, 66910), (4805, 53528), (6691, 38440), (7688, 33455), (9610, 26764), (13382, 19220)]