21405998

素因数分解:

$2^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1\times {\mathrm{2221}}^1$

素因数の和:2363

約数の個数: 16

約数和(自身を含む): 33063360

約数和(自身を除く): 11657362

約数列:

[1, 2, 61, 79, 122, 158, 2221, 4442, 4819, 9638, 135481, 175459, 270962, 350918, 10702999, 21405998]

約数ペア:

[(1, 21405998), (2, 10702999), (61, 350918), (79, 270962), (122, 175459), (158, 135481), (2221, 9638), (4442, 4819)]