20401239

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{421}}^1\times {\mathrm{557}}^1$

素因数の和:1010

約数の個数: 16

約数和(自身を含む): 28257120

約数和(自身を除く): 7855881

約数列:

[1, 3, 29, 87, 421, 557, 1263, 1671, 12209, 16153, 36627, 48459, 234497, 703491, 6800413, 20401239]

約数ペア:

[(1, 20401239), (3, 6800413), (29, 703491), (87, 234497), (421, 48459), (557, 36627), (1263, 16153), (1671, 12209)]