199958960

素因数分解:

$2^4\times 5^1\times {\mathrm{127}}^1\times {\mathrm{19681}}^1$

素因数の和:19821

約数の個数: 40

約数和(自身を含む): 468589056

約数和(自身を除く): 268630096

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 127, 254, 508, 635, 1016, 1270, 2032, 2540, 5080, 10160, 19681, 39362, 78724, 98405, 157448, 196810, 314896, 393620, 787240, 1574480, 2499487, 4998974, 9997948, 12497435, 19995896, 24994870, 39991792, 49989740, 99979480, 199958960]

約数ペア:

[(1, 199958960), (2, 99979480), (4, 49989740), (5, 39991792), (8, 24994870), (10, 19995896), (16, 12497435), (20, 9997948), (40, 4998974), (80, 2499487), (127, 1574480), (254, 787240), (508, 393620), (635, 314896), (1016, 196810), (1270, 157448), (2032, 98405), (2540, 78724), (5080, 39362), (10160, 19681)]