21251778

素因数分解:

$2^1\times 3^1\times {\mathrm{557}}^1\times {\mathrm{6359}}^1$

素因数の和:6921

約数の個数: 16

約数和(自身を含む): 42586560

約数和(自身を除く): 21334782

約数列:

[1, 2, 3, 6, 557, 1114, 1671, 3342, 6359, 12718, 19077, 38154, 3541963, 7083926, 10625889, 21251778]

約数ペア:

[(1, 21251778), (2, 10625889), (3, 7083926), (6, 3541963), (557, 38154), (1114, 19077), (1671, 12718), (3342, 6359)]