21273330

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{54547}}^1$

素因数の和:54570

約数の個数: 32

約数和(自身を含む): 54984384

約数和(自身を除く): 33711054

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 54547, 109094, 163641, 272735, 327282, 545470, 709111, 818205, 1418222, 1636410, 2127333, 3545555, 4254666, 7091110, 10636665, 21273330]

約数ペア:

[(1, 21273330), (2, 10636665), (3, 7091110), (5, 4254666), (6, 3545555), (10, 2127333), (13, 1636410), (15, 1418222), (26, 818205), (30, 709111), (39, 545470), (65, 327282), (78, 272735), (130, 163641), (195, 109094), (390, 54547)]