21270508

素因数分解:

$2^2\times 7^2\times {\mathrm{47}}^1\times {\mathrm{2309}}^1$

素因数の和:2374

約数の個数: 36

約数和(自身を含む): 44241120

約数和(自身を除く): 22970612

約数列:

[1, 2, 4, 7, 14, 28, 47, 49, 94, 98, 188, 196, 329, 658, 1316, 2303, 2309, 4606, 4618, 9212, 9236, 16163, 32326, 64652, 108523, 113141, 217046, 226282, 434092, 452564, 759661, 1519322, 3038644, 5317627, 10635254, 21270508]

約数ペア:

[(1, 21270508), (2, 10635254), (4, 5317627), (7, 3038644), (14, 1519322), (28, 759661), (47, 452564), (49, 434092), (94, 226282), (98, 217046), (188, 113141), (196, 108523), (329, 64652), (658, 32326), (1316, 16163), (2303, 9236), (2309, 9212), (4606, 4618)]