21045890

素因数分解:

$2^1\times 5^1\times {\mathrm{59}}^1\times {\mathrm{35671}}^1$

素因数の和:35737

約数の個数: 16

約数和(自身を含む): 38525760

約数和(自身を除く): 17479870

約数列:

[1, 2, 5, 10, 59, 118, 295, 590, 35671, 71342, 178355, 356710, 2104589, 4209178, 10522945, 21045890]

約数ペア:

[(1, 21045890), (2, 10522945), (5, 4209178), (10, 2104589), (59, 356710), (118, 178355), (295, 71342), (590, 35671)]