21310898

素因数分解:

$2^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{137}}^1\times {\mathrm{271}}^1$

素因数の和:458

約数の個数: 32

約数和(自身を含む): 37836288

約数和(自身を除く): 16525390

約数列:

[1, 2, 7, 14, 41, 82, 137, 271, 274, 287, 542, 574, 959, 1897, 1918, 3794, 5617, 11111, 11234, 22222, 37127, 39319, 74254, 77777, 78638, 155554, 259889, 519778, 1522207, 3044414, 10655449, 21310898]

約数ペア:

[(1, 21310898), (2, 10655449), (7, 3044414), (14, 1522207), (41, 519778), (82, 259889), (137, 155554), (271, 78638), (274, 77777), (287, 74254), (542, 39319), (574, 37127), (959, 22222), (1897, 11234), (1918, 11111), (3794, 5617)]