19882828

素因数分解:

$2^2\times 7^2\times {\mathrm{61}}^1\times {\mathrm{1663}}^1$

素因数の和:1742

約数の個数: 36

約数和(自身を含む): 41164032

約数和(自身を除く): 21281204

約数列:

[1, 2, 4, 7, 14, 28, 49, 61, 98, 122, 196, 244, 427, 854, 1663, 1708, 2989, 3326, 5978, 6652, 11641, 11956, 23282, 46564, 81487, 101443, 162974, 202886, 325948, 405772, 710101, 1420202, 2840404, 4970707, 9941414, 19882828]

約数ペア:

[(1, 19882828), (2, 9941414), (4, 4970707), (7, 2840404), (14, 1420202), (28, 710101), (49, 405772), (61, 325948), (98, 202886), (122, 162974), (196, 101443), (244, 81487), (427, 46564), (854, 23282), (1663, 11956), (1708, 11641), (2989, 6652), (3326, 5978)]