21972489

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{1303}}^1$

素因数の和:1397

約数の個数: 32

約数和(自身を含む): 37054464

約数和(自身を除く): 15081975

約数列:

[1, 3, 7, 11, 21, 33, 73, 77, 219, 231, 511, 803, 1303, 1533, 2409, 3909, 5621, 9121, 14333, 16863, 27363, 42999, 95119, 100331, 285357, 300993, 665833, 1046309, 1997499, 3138927, 7324163, 21972489]

約数ペア:

[(1, 21972489), (3, 7324163), (7, 3138927), (11, 1997499), (21, 1046309), (33, 665833), (73, 300993), (77, 285357), (219, 100331), (231, 95119), (511, 42999), (803, 27363), (1303, 16863), (1533, 14333), (2409, 9121), (3909, 5621)]