198502640

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{354469}}^1$

素因数の和:354489

約数の個数: 40

約数和(自身を含む): 527451360

約数和(自身を除く): 328948720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 354469, 708938, 1417876, 1772345, 2481283, 2835752, 3544690, 4962566, 5671504, 7089380, 9925132, 12406415, 14178760, 19850264, 24812830, 28357520, 39700528, 49625660, 99251320, 198502640]

約数ペア:

[(1, 198502640), (2, 99251320), (4, 49625660), (5, 39700528), (7, 28357520), (8, 24812830), (10, 19850264), (14, 14178760), (16, 12406415), (20, 9925132), (28, 7089380), (35, 5671504), (40, 4962566), (56, 3544690), (70, 2835752), (80, 2481283), (112, 1772345), (140, 1417876), (280, 708938), (560, 354469)]