18561640

素因数分解:

$2^3\times 5^1\times {\mathrm{613}}^1\times {\mathrm{757}}^1$

素因数の和:1381

約数の個数: 32

約数和(自身を含む): 41887080

約数和(自身を除く): 23325440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 613, 757, 1226, 1514, 2452, 3028, 3065, 3785, 4904, 6056, 6130, 7570, 12260, 15140, 24520, 30280, 464041, 928082, 1856164, 2320205, 3712328, 4640410, 9280820, 18561640]

約数ペア:

[(1, 18561640), (2, 9280820), (4, 4640410), (5, 3712328), (8, 2320205), (10, 1856164), (20, 928082), (40, 464041), (613, 30280), (757, 24520), (1226, 15140), (1514, 12260), (2452, 7570), (3028, 6130), (3065, 6056), (3785, 4904)]