21971785

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{1579}}^1$

素因数の和:1629

約数の個数: 24

約数和(自身を含む): 30260160

約数和(自身を除く): 8288375

約数列:

[1, 5, 11, 23, 55, 115, 121, 253, 605, 1265, 1579, 2783, 7895, 13915, 17369, 36317, 86845, 181585, 191059, 399487, 955295, 1997435, 4394357, 21971785]

約数ペア:

[(1, 21971785), (5, 4394357), (11, 1997435), (23, 955295), (55, 399487), (115, 191059), (121, 181585), (253, 86845), (605, 36317), (1265, 17369), (1579, 13915), (2783, 7895)]