19901250428

素因数分解:

$2^2\times {\mathrm{12239}}^1\times {\mathrm{406513}}^1$

素因数の和:418756

約数の個数: 12

約数和(自身を含む): 34830119520

約数和(自身を除く): 14928869092

約数列:

[1, 2, 4, 12239, 24478, 48956, 406513, 813026, 1626052, 4975312607, 9950625214, 19901250428]

約数ペア:

[(1, 19901250428), (2, 9950625214), (4, 4975312607), (12239, 1626052), (24478, 813026), (48956, 406513)]