1315420

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{739}}^1$

素因数の和:837

約数の個数: 24

約数和(自身を含む): 2797200

約数和(自身を除く): 1481780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 739, 890, 1478, 1780, 2956, 3695, 7390, 14780, 65771, 131542, 263084, 328855, 657710, 1315420]

約数ペア:

[(1, 1315420), (2, 657710), (4, 328855), (5, 263084), (10, 131542), (20, 65771), (89, 14780), (178, 7390), (356, 3695), (445, 2956), (739, 1780), (890, 1478)]