20902508

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{2273}}^1$

素因数の和:2318

約数の個数: 36

約数和(自身を含む): 42341880

約数和(自身を除く): 21439372

約数列:

[1, 2, 4, 11, 19, 22, 38, 44, 76, 121, 209, 242, 418, 484, 836, 2273, 2299, 4546, 4598, 9092, 9196, 25003, 43187, 50006, 86374, 100012, 172748, 275033, 475057, 550066, 950114, 1100132, 1900228, 5225627, 10451254, 20902508]

約数ペア:

[(1, 20902508), (2, 10451254), (4, 5225627), (11, 1900228), (19, 1100132), (22, 950114), (38, 550066), (44, 475057), (76, 275033), (121, 172748), (209, 100012), (242, 86374), (418, 50006), (484, 43187), (836, 25003), (2273, 9196), (2299, 9092), (4546, 4598)]