28904180

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{101}}^1\times {\mathrm{349}}^1$

素因数の和:500

約数の個数: 48

約数和(自身を含む): 62974800

約数和(自身を除く): 34070620

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 101, 164, 202, 205, 349, 404, 410, 505, 698, 820, 1010, 1396, 1745, 2020, 3490, 4141, 6980, 8282, 14309, 16564, 20705, 28618, 35249, 41410, 57236, 70498, 71545, 82820, 140996, 143090, 176245, 286180, 352490, 704980, 1445209, 2890418, 5780836, 7226045, 14452090, 28904180]

約数ペア:

[(1, 28904180), (2, 14452090), (4, 7226045), (5, 5780836), (10, 2890418), (20, 1445209), (41, 704980), (82, 352490), (101, 286180), (164, 176245), (202, 143090), (205, 140996), (349, 82820), (404, 71545), (410, 70498), (505, 57236), (698, 41410), (820, 35249), (1010, 28618), (1396, 20705), (1745, 16564), (2020, 14309), (3490, 8282), (4141, 6980)]