21668584

素因数分解:

$2^3\times 7^2\times {\mathrm{167}}^1\times {\mathrm{331}}^1$

素因数の和:518

約数の個数: 48

約数和(自身を含む): 47688480

約数和(自身を除く): 26019896

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 167, 196, 331, 334, 392, 662, 668, 1169, 1324, 1336, 2317, 2338, 2648, 4634, 4676, 8183, 9268, 9352, 16219, 16366, 18536, 32438, 32732, 55277, 64876, 65464, 110554, 129752, 221108, 386939, 442216, 773878, 1547756, 2708573, 3095512, 5417146, 10834292, 21668584]

約数ペア:

[(1, 21668584), (2, 10834292), (4, 5417146), (7, 3095512), (8, 2708573), (14, 1547756), (28, 773878), (49, 442216), (56, 386939), (98, 221108), (167, 129752), (196, 110554), (331, 65464), (334, 64876), (392, 55277), (662, 32732), (668, 32438), (1169, 18536), (1324, 16366), (1336, 16219), (2317, 9352), (2338, 9268), (2648, 8183), (4634, 4676)]