20851089

素因数分解:

$3^1\times 7^1\times {\mathrm{641}}^1\times {\mathrm{1549}}^1$

素因数の和:2200

約数の個数: 16

約数和(自身を含む): 31843200

約数和(自身を除く): 10992111

約数列:

[1, 3, 7, 21, 641, 1549, 1923, 4487, 4647, 10843, 13461, 32529, 992909, 2978727, 6950363, 20851089]

約数ペア:

[(1, 20851089), (3, 6950363), (7, 2978727), (21, 992909), (641, 32529), (1549, 13461), (1923, 10843), (4487, 4647)]