21420406

素因数分解:

$2^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{66523}}^1$

素因数の和:66555

約数の個数: 16

約数和(自身を含む): 38317824

約数和(自身を除く): 16897418

約数列:

[1, 2, 7, 14, 23, 46, 161, 322, 66523, 133046, 465661, 931322, 1530029, 3060058, 10710203, 21420406]

約数ペア:

[(1, 21420406), (2, 10710203), (7, 3060058), (14, 1530029), (23, 931322), (46, 465661), (161, 133046), (322, 66523)]