20826320

素因数分解:

$2^4\times 5^1\times {\mathrm{260329}}^1$

素因数の和:260342

約数の個数: 20

約数和(自身を含む): 48421380

約数和(自身を除く): 27595060

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 260329, 520658, 1041316, 1301645, 2082632, 2603290, 4165264, 5206580, 10413160, 20826320]

約数ペア:

[(1, 20826320), (2, 10413160), (4, 5206580), (5, 4165264), (8, 2603290), (10, 2082632), (16, 1301645), (20, 1041316), (40, 520658), (80, 260329)]