138666940

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{3613}}^1$

素因数の和:3742

約数の個数: 48

約数和(自身を含む): 309647520

約数和(自身を除く): 170980580

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 101, 190, 202, 380, 404, 505, 1010, 1919, 2020, 3613, 3838, 7226, 7676, 9595, 14452, 18065, 19190, 36130, 38380, 68647, 72260, 137294, 274588, 343235, 364913, 686470, 729826, 1372940, 1459652, 1824565, 3649130, 6933347, 7298260, 13866694, 27733388, 34666735, 69333470, 138666940]

約数ペア:

[(1, 138666940), (2, 69333470), (4, 34666735), (5, 27733388), (10, 13866694), (19, 7298260), (20, 6933347), (38, 3649130), (76, 1824565), (95, 1459652), (101, 1372940), (190, 729826), (202, 686470), (380, 364913), (404, 343235), (505, 274588), (1010, 137294), (1919, 72260), (2020, 68647), (3613, 38380), (3838, 36130), (7226, 19190), (7676, 18065), (9595, 14452)]