390331375

素因数分解:

$5^3\times 7^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{103}}^1$

素因数の和:257

約数の個数: 64

約数和(自身を含む): 579391488

約数和(自身を除く): 189060113

約数列:

[1, 5, 7, 25, 35, 61, 71, 103, 125, 175, 305, 355, 427, 497, 515, 721, 875, 1525, 1775, 2135, 2485, 2575, 3605, 4331, 6283, 7313, 7625, 8875, 10675, 12425, 12875, 18025, 21655, 30317, 31415, 36565, 43981, 51191, 53375, 62125, 90125, 108275, 151585, 157075, 182825, 219905, 255955, 446093, 541375, 757925, 785375, 914125, 1099525, 1279775, 2230465, 3122651, 3789625, 5497625, 6398875, 11152325, 15613255, 55761625, 78066275, 390331375]

約数ペア:

[(1, 390331375), (5, 78066275), (7, 55761625), (25, 15613255), (35, 11152325), (61, 6398875), (71, 5497625), (103, 3789625), (125, 3122651), (175, 2230465), (305, 1279775), (355, 1099525), (427, 914125), (497, 785375), (515, 757925), (721, 541375), (875, 446093), (1525, 255955), (1775, 219905), (2135, 182825), (2485, 157075), (2575, 151585), (3605, 108275), (4331, 90125), (6283, 62125), (7313, 53375), (7625, 51191), (8875, 43981), (10675, 36565), (12425, 31415), (12875, 30317), (18025, 21655)]