21719978

素因数分解:

$2^1\times 7^1\times {\mathrm{1213}}^1\times {\mathrm{1279}}^1$

素因数の和:2501

約数の個数: 16

約数和(自身を含む): 37294080

約数和(自身を除く): 15574102

約数列:

[1, 2, 7, 14, 1213, 1279, 2426, 2558, 8491, 8953, 16982, 17906, 1551427, 3102854, 10859989, 21719978]

約数ペア:

[(1, 21719978), (2, 10859989), (7, 3102854), (14, 1551427), (1213, 17906), (1279, 16982), (2426, 8953), (2558, 8491)]