20900570

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{2683}}^1$

素因数の和:2750

約数の個数: 32

約数和(自身を含む): 40582080

約数和(自身を除く): 19681510

約数列:

[1, 2, 5, 10, 19, 38, 41, 82, 95, 190, 205, 410, 779, 1558, 2683, 3895, 5366, 7790, 13415, 26830, 50977, 101954, 110003, 220006, 254885, 509770, 550015, 1100030, 2090057, 4180114, 10450285, 20900570]

約数ペア:

[(1, 20900570), (2, 10450285), (5, 4180114), (10, 2090057), (19, 1100030), (38, 550015), (41, 509770), (82, 254885), (95, 220006), (190, 110003), (205, 101954), (410, 50977), (779, 26830), (1558, 13415), (2683, 7790), (3895, 5366)]