18964215

素因数分解:

$3^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{3217}}^1$

素因数の和:3359

約数の個数: 24

約数和(自身を含む): 33132528

約数和(自身を除く): 14168313

約数列:

[1, 3, 5, 9, 15, 45, 131, 393, 655, 1179, 1965, 3217, 5895, 9651, 16085, 28953, 48255, 144765, 421427, 1264281, 2107135, 3792843, 6321405, 18964215]

約数ペア:

[(1, 18964215), (3, 6321405), (5, 3792843), (9, 2107135), (15, 1264281), (45, 421427), (131, 144765), (393, 48255), (655, 28953), (1179, 16085), (1965, 9651), (3217, 5895)]