209433920

素因数分解:

$2^6\times 5^1\times {\mathrm{809}}^2$

素因数の和:1635

約数の個数: 42

約数和(自身を含む): 499331742

約数和(自身を除く): 289897822

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 809, 1618, 3236, 4045, 6472, 8090, 12944, 16180, 25888, 32360, 51776, 64720, 129440, 258880, 654481, 1308962, 2617924, 3272405, 5235848, 6544810, 10471696, 13089620, 20943392, 26179240, 41886784, 52358480, 104716960, 209433920]

約数ペア:

[(1, 209433920), (2, 104716960), (4, 52358480), (5, 41886784), (8, 26179240), (10, 20943392), (16, 13089620), (20, 10471696), (32, 6544810), (40, 5235848), (64, 3272405), (80, 2617924), (160, 1308962), (320, 654481), (809, 258880), (1618, 129440), (3236, 64720), (4045, 51776), (6472, 32360), (8090, 25888), (12944, 16180)]