21016400

素因数分解:

$2^4\times 5^2\times {\mathrm{52541}}^1$

素因数の和:52559

約数の個数: 30

約数和(自身を含む): 50492862

約数和(自身を除く): 29476462

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 52541, 105082, 210164, 262705, 420328, 525410, 840656, 1050820, 1313525, 2101640, 2627050, 4203280, 5254100, 10508200, 21016400]

約数ペア:

[(1, 21016400), (2, 10508200), (4, 5254100), (5, 4203280), (8, 2627050), (10, 2101640), (16, 1313525), (20, 1050820), (25, 840656), (40, 525410), (50, 420328), (80, 262705), (100, 210164), (200, 105082), (400, 52541)]