20684787

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{167}}^1$

素因数の和:283

約数の個数: 32

約数和(自身を含む): 30481920

約数和(自身を除く): 9797133

約数列:

[1, 3, 19, 41, 53, 57, 123, 159, 167, 501, 779, 1007, 2173, 2337, 3021, 3173, 6519, 6847, 8851, 9519, 20541, 26553, 41287, 123861, 130093, 168169, 362891, 390279, 504507, 1088673, 6894929, 20684787]

約数ペア:

[(1, 20684787), (3, 6894929), (19, 1088673), (41, 504507), (53, 390279), (57, 362891), (123, 168169), (159, 130093), (167, 123861), (501, 41287), (779, 26553), (1007, 20541), (2173, 9519), (2337, 8851), (3021, 6847), (3173, 6519)]