20170120

素因数分解:

$2^3\times 5^1\times {\mathrm{293}}^1\times {\mathrm{1721}}^1$

素因数の和:2025

約数の個数: 32

約数和(自身を含む): 45564120

約数和(自身を除く): 25394000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 293, 586, 1172, 1465, 1721, 2344, 2930, 3442, 5860, 6884, 8605, 11720, 13768, 17210, 34420, 68840, 504253, 1008506, 2017012, 2521265, 4034024, 5042530, 10085060, 20170120]

約数ペア:

[(1, 20170120), (2, 10085060), (4, 5042530), (5, 4034024), (8, 2521265), (10, 2017012), (20, 1008506), (40, 504253), (293, 68840), (586, 34420), (1172, 17210), (1465, 13768), (1721, 11720), (2344, 8605), (2930, 6884), (3442, 5860)]