20214747

素因数分解:

$3^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{6827}}^1$

素因数の和:6887

約数の個数: 24

約数和(自身を含む): 34085376

約数和(自身を除く): 13870629

約数列:

[1, 3, 7, 9, 21, 47, 63, 141, 329, 423, 987, 2961, 6827, 20481, 47789, 61443, 143367, 320869, 430101, 962607, 2246083, 2887821, 6738249, 20214747]

約数ペア:

[(1, 20214747), (3, 6738249), (7, 2887821), (9, 2246083), (21, 962607), (47, 430101), (63, 320869), (141, 143367), (329, 61443), (423, 47789), (987, 20481), (2961, 6827)]