21350553

素因数分解:

$3^1\times 7^1\times {\mathrm{191}}^1\times {\mathrm{5323}}^1$

素因数の和:5524

約数の個数: 16

約数和(自身を含む): 32710656

約数和(自身を除く): 11360103

約数列:

[1, 3, 7, 21, 191, 573, 1337, 4011, 5323, 15969, 37261, 111783, 1016693, 3050079, 7116851, 21350553]

約数ペア:

[(1, 21350553), (3, 7116851), (7, 3050079), (21, 1016693), (191, 111783), (573, 37261), (1337, 15969), (4011, 5323)]