20915560

素因数分解:

$2^3\times 5^1\times {\mathrm{613}}^1\times {\mathrm{853}}^1$

素因数の和:1477

約数の個数: 32

約数和(自身を含む): 47192040

約数和(自身を除く): 26276480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 613, 853, 1226, 1706, 2452, 3065, 3412, 4265, 4904, 6130, 6824, 8530, 12260, 17060, 24520, 34120, 522889, 1045778, 2091556, 2614445, 4183112, 5228890, 10457780, 20915560]

約数ペア:

[(1, 20915560), (2, 10457780), (4, 5228890), (5, 4183112), (8, 2614445), (10, 2091556), (20, 1045778), (40, 522889), (613, 34120), (853, 24520), (1226, 17060), (1706, 12260), (2452, 8530), (3065, 6824), (3412, 6130), (4265, 4904)]