316840

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^2$

素因数の和:189

約数の個数: 24

約数和(自身を含む): 720990

約数和(自身を除く): 404150

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 7921, 15842, 31684, 39605, 63368, 79210, 158420, 316840]

約数ペア:

[(1, 316840), (2, 158420), (4, 79210), (5, 63368), (8, 39605), (10, 31684), (20, 15842), (40, 7921), (89, 3560), (178, 1780), (356, 890), (445, 712)]