21748450

素因数分解:

$2^1\times 5^2\times {\mathrm{41}}^1\times {\mathrm{103}}^2$

素因数の和:259

約数の個数: 36

約数和(自身を含む): 41844978

約数和(自身を除く): 20096528

約数列:

[1, 2, 5, 10, 25, 41, 50, 82, 103, 205, 206, 410, 515, 1025, 1030, 2050, 2575, 4223, 5150, 8446, 10609, 21115, 21218, 42230, 53045, 105575, 106090, 211150, 265225, 434969, 530450, 869938, 2174845, 4349690, 10874225, 21748450]

約数ペア:

[(1, 21748450), (2, 10874225), (5, 4349690), (10, 2174845), (25, 869938), (41, 530450), (50, 434969), (82, 265225), (103, 211150), (205, 106090), (206, 105575), (410, 53045), (515, 42230), (1025, 21218), (1030, 21115), (2050, 10609), (2575, 8446), (4223, 5150)]