28204265

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{157}}^1$

素因数の和:273

約数の個数: 32

約数和(自身を含む): 37616640

約数和(自身を除く): 9412375

約数列:

[1, 5, 19, 31, 61, 95, 155, 157, 305, 589, 785, 1159, 1891, 2945, 2983, 4867, 5795, 9455, 9577, 14915, 24335, 35929, 47885, 92473, 179645, 181963, 296887, 462365, 909815, 1484435, 5640853, 28204265]

約数ペア:

[(1, 28204265), (5, 5640853), (19, 1484435), (31, 909815), (61, 462365), (95, 296887), (155, 181963), (157, 179645), (305, 92473), (589, 47885), (785, 35929), (1159, 24335), (1891, 14915), (2945, 9577), (2983, 9455), (4867, 5795)]