18505827

素因数分解:

$3^4\times {\mathrm{47}}^1\times {\mathrm{4861}}^1$

素因数の和:4920

約数の個数: 20

約数和(自身を含む): 28238496

約数和(自身を除く): 9732669

約数列:

[1, 3, 9, 27, 47, 81, 141, 423, 1269, 3807, 4861, 14583, 43749, 131247, 228467, 393741, 685401, 2056203, 6168609, 18505827]

約数ペア:

[(1, 18505827), (3, 6168609), (9, 2056203), (27, 685401), (47, 393741), (81, 228467), (141, 131247), (423, 43749), (1269, 14583), (3807, 4861)]