20155828

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{2111}}^1$

素因数の和:2164

約数の個数: 48

約数和(自身を含む): 45416448

約数和(自身を除く): 25260620

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 31, 44, 62, 77, 124, 154, 217, 308, 341, 434, 682, 868, 1364, 2111, 2387, 4222, 4774, 8444, 9548, 14777, 23221, 29554, 46442, 59108, 65441, 92884, 130882, 162547, 261764, 325094, 458087, 650188, 719851, 916174, 1439702, 1832348, 2879404, 5038957, 10077914, 20155828]

約数ペア:

[(1, 20155828), (2, 10077914), (4, 5038957), (7, 2879404), (11, 1832348), (14, 1439702), (22, 916174), (28, 719851), (31, 650188), (44, 458087), (62, 325094), (77, 261764), (124, 162547), (154, 130882), (217, 92884), (308, 65441), (341, 59108), (434, 46442), (682, 29554), (868, 23221), (1364, 14777), (2111, 9548), (2387, 8444), (4222, 4774)]