81378801

素因数分解:

$3^2\times 7^1\times {\mathrm{139}}^1\times {\mathrm{9293}}^1$

素因数の和:9445

約数の個数: 24

約数和(自身を含む): 135320640

約数和(自身を除く): 53941839

約数列:

[1, 3, 7, 9, 21, 63, 139, 417, 973, 1251, 2919, 8757, 9293, 27879, 65051, 83637, 195153, 585459, 1291727, 3875181, 9042089, 11625543, 27126267, 81378801]

約数ペア:

[(1, 81378801), (3, 27126267), (7, 11625543), (9, 9042089), (21, 3875181), (63, 1291727), (139, 585459), (417, 195153), (973, 83637), (1251, 65051), (2919, 27879), (8757, 9293)]