205430900

素因数分解:

$2^2\times 5^2\times {\mathrm{389}}^1\times {\mathrm{5281}}^1$

素因数の和:5684

約数の個数: 36

約数和(自身を含む): 447015660

約数和(自身を除く): 241584760

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 389, 778, 1556, 1945, 3890, 5281, 7780, 9725, 10562, 19450, 21124, 26405, 38900, 52810, 105620, 132025, 264050, 528100, 2054309, 4108618, 8217236, 10271545, 20543090, 41086180, 51357725, 102715450, 205430900]

約数ペア:

[(1, 205430900), (2, 102715450), (4, 51357725), (5, 41086180), (10, 20543090), (20, 10271545), (25, 8217236), (50, 4108618), (100, 2054309), (389, 528100), (778, 264050), (1556, 132025), (1945, 105620), (3890, 52810), (5281, 38900), (7780, 26405), (9725, 21124), (10562, 19450)]