20180204

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{239}}^1$

素因数の和:374

約数の個数: 48

約数和(自身を含む): 41126400

約数和(自身を除く): 20946196

約数列:

[1, 2, 4, 11, 19, 22, 38, 44, 76, 101, 202, 209, 239, 404, 418, 478, 836, 956, 1111, 1919, 2222, 2629, 3838, 4444, 4541, 5258, 7676, 9082, 10516, 18164, 21109, 24139, 42218, 48278, 49951, 84436, 96556, 99902, 199804, 265529, 458641, 531058, 917282, 1062116, 1834564, 5045051, 10090102, 20180204]

約数ペア:

[(1, 20180204), (2, 10090102), (4, 5045051), (11, 1834564), (19, 1062116), (22, 917282), (38, 531058), (44, 458641), (76, 265529), (101, 199804), (202, 99902), (209, 96556), (239, 84436), (404, 49951), (418, 48278), (478, 42218), (836, 24139), (956, 21109), (1111, 18164), (1919, 10516), (2222, 9082), (2629, 7676), (3838, 5258), (4444, 4541)]