20416977

素因数分解:

$3^2\times 7^2\times {\mathrm{67}}^1\times {\mathrm{691}}^1$

素因数の和:778

約数の個数: 36

約数和(自身を含む): 34868496

約数和(自身を除く): 14451519

約数列:

[1, 3, 7, 9, 21, 49, 63, 67, 147, 201, 441, 469, 603, 691, 1407, 2073, 3283, 4221, 4837, 6219, 9849, 14511, 29547, 33859, 43533, 46297, 101577, 138891, 304731, 324079, 416673, 972237, 2268553, 2916711, 6805659, 20416977]

約数ペア:

[(1, 20416977), (3, 6805659), (7, 2916711), (9, 2268553), (21, 972237), (49, 416673), (63, 324079), (67, 304731), (147, 138891), (201, 101577), (441, 46297), (469, 43533), (603, 33859), (691, 29547), (1407, 14511), (2073, 9849), (3283, 6219), (4221, 4837)]