21696553

素因数分解:

${\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1\times {\mathrm{137}}^1$

素因数の和:336

約数の個数: 16

約数和(自身を含む): 23316480

約数和(自身を除く): 1619927

約数列:

[1, 29, 43, 127, 137, 1247, 3683, 3973, 5461, 5891, 17399, 158369, 170839, 504571, 748157, 21696553]

約数ペア:

[(1, 21696553), (29, 748157), (43, 504571), (127, 170839), (137, 158369), (1247, 17399), (3683, 5891), (3973, 5461)]