20590870

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{101}}^1$

素因数の和:193

約数の個数: 64

約数和(自身を含む): 41860800

約数和(自身を除く): 21269930

約数列:

[1, 2, 5, 10, 19, 29, 37, 38, 58, 74, 95, 101, 145, 185, 190, 202, 290, 370, 505, 551, 703, 1010, 1073, 1102, 1406, 1919, 2146, 2755, 2929, 3515, 3737, 3838, 5365, 5510, 5858, 7030, 7474, 9595, 10730, 14645, 18685, 19190, 20387, 29290, 37370, 40774, 55651, 71003, 101935, 108373, 111302, 142006, 203870, 216746, 278255, 355015, 541865, 556510, 710030, 1083730, 2059087, 4118174, 10295435, 20590870]

約数ペア:

[(1, 20590870), (2, 10295435), (5, 4118174), (10, 2059087), (19, 1083730), (29, 710030), (37, 556510), (38, 541865), (58, 355015), (74, 278255), (95, 216746), (101, 203870), (145, 142006), (185, 111302), (190, 108373), (202, 101935), (290, 71003), (370, 55651), (505, 40774), (551, 37370), (703, 29290), (1010, 20387), (1073, 19190), (1102, 18685), (1406, 14645), (1919, 10730), (2146, 9595), (2755, 7474), (2929, 7030), (3515, 5858), (3737, 5510), (3838, 5365)]