258758420

素因数分解:

$2^2\times 5^1\times {\mathrm{1489}}^1\times {\mathrm{8689}}^1$

素因数の和:10187

約数の個数: 24

約数和(自身を含む): 543820200

約数和(自身を除く): 285061780

約数列:

[1, 2, 4, 5, 10, 20, 1489, 2978, 5956, 7445, 8689, 14890, 17378, 29780, 34756, 43445, 86890, 173780, 12937921, 25875842, 51751684, 64689605, 129379210, 258758420]

約数ペア:

[(1, 258758420), (2, 129379210), (4, 64689605), (5, 51751684), (10, 25875842), (20, 12937921), (1489, 173780), (2978, 86890), (5956, 43445), (7445, 34756), (8689, 29780), (14890, 17378)]