20491364

素因数分解:

$2^2\times {\mathrm{61}}^1\times {\mathrm{137}}^1\times {\mathrm{613}}^1$

素因数の和:815

約数の個数: 24

約数和(自身を含む): 36773688

約数和(自身を除く): 16282324

約数列:

[1, 2, 4, 61, 122, 137, 244, 274, 548, 613, 1226, 2452, 8357, 16714, 33428, 37393, 74786, 83981, 149572, 167962, 335924, 5122841, 10245682, 20491364]

約数ペア:

[(1, 20491364), (2, 10245682), (4, 5122841), (61, 335924), (122, 167962), (137, 149572), (244, 83981), (274, 74786), (548, 37393), (613, 33428), (1226, 16714), (2452, 8357)]