81404855

素因数分解:

$5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{151}}^1\times {\mathrm{211}}^1$

素因数の和:447

約数の個数: 32

約数和(自身を含む): 114459648

約数和(自身を除く): 33054793

約数列:

[1, 5, 7, 35, 73, 151, 211, 365, 511, 755, 1055, 1057, 1477, 2555, 5285, 7385, 11023, 15403, 31861, 55115, 77015, 77161, 107821, 159305, 223027, 385805, 539105, 1115135, 2325853, 11629265, 16280971, 81404855]

約数ペア:

[(1, 81404855), (5, 16280971), (7, 11629265), (35, 2325853), (73, 1115135), (151, 539105), (211, 385805), (365, 223027), (511, 159305), (755, 107821), (1055, 77161), (1057, 77015), (1477, 55115), (2555, 31861), (5285, 15403), (7385, 11023)]