20212423

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{101}}^1\times {\mathrm{113}}^1$

素因数の和:255

約数の個数: 32

約数和(自身を含む): 26790912

約数和(自身を除く): 6578489

約数列:

[1, 7, 11, 23, 77, 101, 113, 161, 253, 707, 791, 1111, 1243, 1771, 2323, 2599, 7777, 8701, 11413, 16261, 18193, 25553, 28589, 79891, 125543, 178871, 200123, 262499, 878801, 1837493, 2887489, 20212423]

約数ペア:

[(1, 20212423), (7, 2887489), (11, 1837493), (23, 878801), (77, 262499), (101, 200123), (113, 178871), (161, 125543), (253, 79891), (707, 28589), (791, 25553), (1111, 18193), (1243, 16261), (1771, 11413), (2323, 8701), (2599, 7777)]