8689960

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{2441}}^1$

素因数の和:2541

約数の個数: 32

約数和(自身を含む): 19780200

約数和(自身を除く): 11090240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 2441, 3560, 4882, 9764, 12205, 19528, 24410, 48820, 97640, 217249, 434498, 868996, 1086245, 1737992, 2172490, 4344980, 8689960]

約数ペア:

[(1, 8689960), (2, 4344980), (4, 2172490), (5, 1737992), (8, 1086245), (10, 868996), (20, 434498), (40, 217249), (89, 97640), (178, 48820), (356, 24410), (445, 19528), (712, 12205), (890, 9764), (1780, 4882), (2441, 3560)]