21439270

素因数分解:

$2^1\times 5^1\times {\mathrm{101}}^1\times {\mathrm{21227}}^1$

素因数の和:21335

約数の個数: 16

約数和(自身を含む): 38974608

約数和(自身を除く): 17535338

約数列:

[1, 2, 5, 10, 101, 202, 505, 1010, 21227, 42454, 106135, 212270, 2143927, 4287854, 10719635, 21439270]

約数ペア:

[(1, 21439270), (2, 10719635), (5, 4287854), (10, 2143927), (101, 212270), (202, 106135), (505, 42454), (1010, 21227)]