251681409

素因数分解:

$3^2\times 7^1\times {\mathrm{89}}^1\times {\mathrm{44887}}^1$

素因数の和:44989

約数の個数: 24

約数和(自身を含む): 420151680

約数和(自身を除く): 168470271

約数列:

[1, 3, 7, 9, 21, 63, 89, 267, 623, 801, 1869, 5607, 44887, 134661, 314209, 403983, 942627, 2827881, 3994943, 11984829, 27964601, 35954487, 83893803, 251681409]

約数ペア:

[(1, 251681409), (3, 83893803), (7, 35954487), (9, 27964601), (21, 11984829), (63, 3994943), (89, 2827881), (267, 942627), (623, 403983), (801, 314209), (1869, 134661), (5607, 44887)]