31378221

素因数分解:

$3^2\times 7^1\times {\mathrm{173}}^1\times {\mathrm{2879}}^1$

素因数の和:3065

約数の個数: 24

約数和(自身を含む): 52116480

約数和(自身を除く): 20738259

約数列:

[1, 3, 7, 9, 21, 63, 173, 519, 1211, 1557, 2879, 3633, 8637, 10899, 20153, 25911, 60459, 181377, 498067, 1494201, 3486469, 4482603, 10459407, 31378221]

約数ペア:

[(1, 31378221), (3, 10459407), (7, 4482603), (9, 3486469), (21, 1494201), (63, 498067), (173, 181377), (519, 60459), (1211, 25911), (1557, 20153), (2879, 10899), (3633, 8637)]