257723739

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{10151}}^1$

素因数の和:10208

約数の個数: 48

約数和(自身を含む): 473001984

約数和(自身を除く): 215278245

約数列:

[1, 3, 7, 9, 13, 21, 31, 39, 63, 91, 93, 117, 217, 273, 279, 403, 651, 819, 1209, 1953, 2821, 3627, 8463, 10151, 25389, 30453, 71057, 91359, 131963, 213171, 314681, 395889, 639513, 923741, 944043, 1187667, 2202767, 2771223, 2832129, 4090853, 6608301, 8313669, 12272559, 19824903, 28635971, 36817677, 85907913, 257723739]

約数ペア:

[(1, 257723739), (3, 85907913), (7, 36817677), (9, 28635971), (13, 19824903), (21, 12272559), (31, 8313669), (39, 6608301), (63, 4090853), (91, 2832129), (93, 2771223), (117, 2202767), (217, 1187667), (273, 944043), (279, 923741), (403, 639513), (651, 395889), (819, 314681), (1209, 213171), (1953, 131963), (2821, 91359), (3627, 71057), (8463, 30453), (10151, 25389)]