20778824

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{389}}^1\times {\mathrm{607}}^1$

素因数の和:1013

約数の個数: 32

約数和(自身を含む): 42681600

約数和(自身を除く): 21902776

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 389, 607, 778, 1214, 1556, 2428, 3112, 4279, 4856, 6677, 8558, 13354, 17116, 26708, 34232, 53416, 236123, 472246, 944492, 1888984, 2597353, 5194706, 10389412, 20778824]

約数ペア:

[(1, 20778824), (2, 10389412), (4, 5194706), (8, 2597353), (11, 1888984), (22, 944492), (44, 472246), (88, 236123), (389, 53416), (607, 34232), (778, 26708), (1214, 17116), (1556, 13354), (2428, 8558), (3112, 6677), (4279, 4856)]