21031874508

素因数分解:

$2^2\times 3^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{990761}}^1$

素因数の和:990858

約数の個数: 48

約数和(自身を含む): 51598884960

約数和(自身を除く): 30567010452

約数列:

[1, 2, 3, 4, 6, 12, 29, 58, 61, 87, 116, 122, 174, 183, 244, 348, 366, 732, 1769, 3538, 5307, 7076, 10614, 21228, 990761, 1981522, 2972283, 3963044, 5944566, 11889132, 28732069, 57464138, 60436421, 86196207, 114928276, 120872842, 172392414, 181309263, 241745684, 344784828, 362618526, 725237052, 1752656209, 3505312418, 5257968627, 7010624836, 10515937254, 21031874508]

約数ペア:

[(1, 21031874508), (2, 10515937254), (3, 7010624836), (4, 5257968627), (6, 3505312418), (12, 1752656209), (29, 725237052), (58, 362618526), (61, 344784828), (87, 241745684), (116, 181309263), (122, 172392414), (174, 120872842), (183, 114928276), (244, 86196207), (348, 60436421), (366, 57464138), (732, 28732069), (1769, 11889132), (3538, 5944566), (5307, 3963044), (7076, 2972283), (10614, 1981522), (21228, 990761)]