20958665

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{631}}^1$

素因数の和:729

約数の個数: 32

約数和(自身を含む): 31428096

約数和(自身を除く): 10469431

約数列:

[1, 5, 7, 13, 35, 65, 73, 91, 365, 455, 511, 631, 949, 2555, 3155, 4417, 4745, 6643, 8203, 22085, 33215, 41015, 46063, 57421, 230315, 287105, 322441, 598819, 1612205, 2994095, 4191733, 20958665]

約数ペア:

[(1, 20958665), (5, 4191733), (7, 2994095), (13, 1612205), (35, 598819), (65, 322441), (73, 287105), (91, 230315), (365, 57421), (455, 46063), (511, 41015), (631, 33215), (949, 22085), (2555, 8203), (3155, 6643), (4417, 4745)]