21258380

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{7433}}^1$

素因数の和:7466

約数の個数: 48

約数和(自身を含む): 52454304

約数和(自身を除く): 31195924

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 130, 143, 220, 260, 286, 572, 715, 1430, 2860, 7433, 14866, 29732, 37165, 74330, 81763, 96629, 148660, 163526, 193258, 327052, 386516, 408815, 483145, 817630, 966290, 1062919, 1635260, 1932580, 2125838, 4251676, 5314595, 10629190, 21258380]

約数ペア:

[(1, 21258380), (2, 10629190), (4, 5314595), (5, 4251676), (10, 2125838), (11, 1932580), (13, 1635260), (20, 1062919), (22, 966290), (26, 817630), (44, 483145), (52, 408815), (55, 386516), (65, 327052), (110, 193258), (130, 163526), (143, 148660), (220, 96629), (260, 81763), (286, 74330), (572, 37165), (715, 29732), (1430, 14866), (2860, 7433)]