27720665

素因数分解:

$5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{881}}^1$

素因数の和:953

約数の個数: 32

約数和(自身を含む): 40642560

約数和(自身を除く): 12921895

約数列:

[1, 5, 7, 29, 31, 35, 145, 155, 203, 217, 881, 899, 1015, 1085, 4405, 4495, 6167, 6293, 25549, 27311, 30835, 31465, 127745, 136555, 178843, 191177, 792019, 894215, 955885, 3960095, 5544133, 27720665]

約数ペア:

[(1, 27720665), (5, 5544133), (7, 3960095), (29, 955885), (31, 894215), (35, 792019), (145, 191177), (155, 178843), (203, 136555), (217, 127745), (881, 31465), (899, 30835), (1015, 27311), (1085, 25549), (4405, 6293), (4495, 6167)]