21842321

素因数分解:

${\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{137}}^1\times {\mathrm{139}}^1$

素因数の和:344

約数の個数: 16

約数和(自身を含む): 23493120

約数和(自身を除く): 1650799

約数列:

[1, 31, 37, 137, 139, 1147, 4247, 4309, 5069, 5143, 19043, 157139, 159433, 590333, 704591, 21842321]

約数ペア:

[(1, 21842321), (31, 704591), (37, 590333), (137, 159433), (139, 157139), (1147, 19043), (4247, 5143), (4309, 5069)]