21302440

素因数分解:

$2^3\times 5^1\times {\mathrm{532561}}^1$

素因数の和:532572

約数の個数: 16

約数和(自身を含む): 47930580

約数和(自身を除く): 26628140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 532561, 1065122, 2130244, 2662805, 4260488, 5325610, 10651220, 21302440]

約数ペア:

[(1, 21302440), (2, 10651220), (4, 5325610), (5, 4260488), (8, 2662805), (10, 2130244), (20, 1065122), (40, 532561)]