67228780

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{78173}}^1$

素因数の和:78225

約数の個数: 24

約数和(自身を含む): 144465552

約数和(自身を除く): 77236772

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 78173, 156346, 312692, 390865, 781730, 1563460, 3361439, 6722878, 13445756, 16807195, 33614390, 67228780]

約数ペア:

[(1, 67228780), (2, 33614390), (4, 16807195), (5, 13445756), (10, 6722878), (20, 3361439), (43, 1563460), (86, 781730), (172, 390865), (215, 312692), (430, 156346), (860, 78173)]