208420

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{613}}^1$

素因数の和:639

約数の個数: 24

約数和(自身を含む): 464184

約数和(自身を除く): 255764

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 613, 1226, 2452, 3065, 6130, 10421, 12260, 20842, 41684, 52105, 104210, 208420]

約数ペア:

[(1, 208420), (2, 104210), (4, 52105), (5, 41684), (10, 20842), (17, 12260), (20, 10421), (34, 6130), (68, 3065), (85, 2452), (170, 1226), (340, 613)]