38478260

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{21617}}^1$

素因数の和:21715

約数の個数: 24

約数和(自身を含む): 81716040

約数和(自身を除く): 43237780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 21617, 43234, 86468, 108085, 216170, 432340, 1923913, 3847826, 7695652, 9619565, 19239130, 38478260]

約数ペア:

[(1, 38478260), (2, 19239130), (4, 9619565), (5, 7695652), (10, 3847826), (20, 1923913), (89, 432340), (178, 216170), (356, 108085), (445, 86468), (890, 43234), (1780, 21617)]