20914760

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{30757}}^1$

素因数の和:30785

約数の個数: 32

約数和(自身を含む): 49827960

約数和(自身を除く): 28913200

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 30757, 61514, 123028, 153785, 246056, 307570, 522869, 615140, 1045738, 1230280, 2091476, 2614345, 4182952, 5228690, 10457380, 20914760]

約数ペア:

[(1, 20914760), (2, 10457380), (4, 5228690), (5, 4182952), (8, 2614345), (10, 2091476), (17, 1230280), (20, 1045738), (34, 615140), (40, 522869), (68, 307570), (85, 246056), (136, 153785), (170, 123028), (340, 61514), (680, 30757)]