21839841

素因数分解:

$3^3\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{269}}^1$

素因数の和:406

約数の個数: 32

約数和(自身を含む): 33868800

約数和(自身を除く): 12028959

約数列:

[1, 3, 9, 27, 31, 93, 97, 269, 279, 291, 807, 837, 873, 2421, 2619, 3007, 7263, 8339, 9021, 25017, 26093, 27063, 75051, 78279, 81189, 225153, 234837, 704511, 808883, 2426649, 7279947, 21839841]

約数ペア:

[(1, 21839841), (3, 7279947), (9, 2426649), (27, 808883), (31, 704511), (93, 234837), (97, 225153), (269, 81189), (279, 78279), (291, 75051), (807, 27063), (837, 26093), (873, 25017), (2421, 9021), (2619, 8339), (3007, 7263)]