20915878

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{12289}}^1$

素因数の和:12351

約数の個数: 16

約数和(自身を含む): 33625440

約数和(自身を除く): 12709562

約数列:

[1, 2, 23, 37, 46, 74, 851, 1702, 12289, 24578, 282647, 454693, 565294, 909386, 10457939, 20915878]

約数ペア:

[(1, 20915878), (2, 10457939), (23, 909386), (37, 565294), (46, 454693), (74, 282647), (851, 24578), (1702, 12289)]