21150844

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{359}}^1$

素因数の和:490

約数の個数: 48

約数和(自身を含む): 44029440

約数和(自身を除く): 22878596

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 103, 143, 206, 286, 359, 412, 572, 718, 1133, 1339, 1436, 2266, 2678, 3949, 4532, 4667, 5356, 7898, 9334, 14729, 15796, 18668, 29458, 36977, 51337, 58916, 73954, 102674, 147908, 205348, 406747, 480701, 813494, 961402, 1626988, 1922804, 5287711, 10575422, 21150844]

約数ペア:

[(1, 21150844), (2, 10575422), (4, 5287711), (11, 1922804), (13, 1626988), (22, 961402), (26, 813494), (44, 480701), (52, 406747), (103, 205348), (143, 147908), (206, 102674), (286, 73954), (359, 58916), (412, 51337), (572, 36977), (718, 29458), (1133, 18668), (1339, 15796), (1436, 14729), (2266, 9334), (2678, 7898), (3949, 5356), (4532, 4667)]