21997402

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{2017}}^1$

素因数の和:2086

約数の個数: 32

約数和(自身を含む): 40682880

約数和(自身を除く): 18685478

約数列:

[1, 2, 7, 14, 19, 38, 41, 82, 133, 266, 287, 574, 779, 1558, 2017, 4034, 5453, 10906, 14119, 28238, 38323, 76646, 82697, 165394, 268261, 536522, 578879, 1157758, 1571243, 3142486, 10998701, 21997402]

約数ペア:

[(1, 21997402), (2, 10998701), (7, 3142486), (14, 1571243), (19, 1157758), (38, 578879), (41, 536522), (82, 268261), (133, 165394), (266, 82697), (287, 76646), (574, 38323), (779, 28238), (1558, 14119), (2017, 10906), (4034, 5453)]