20959660

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{2903}}^1$

素因数の和:2950

約数の個数: 36

約数和(自身を含む): 46469808

約数和(自身を除く): 25510148

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 361, 380, 722, 1444, 1805, 2903, 3610, 5806, 7220, 11612, 14515, 29030, 55157, 58060, 110314, 220628, 275785, 551570, 1047983, 1103140, 2095966, 4191932, 5239915, 10479830, 20959660]

約数ペア:

[(1, 20959660), (2, 10479830), (4, 5239915), (5, 4191932), (10, 2095966), (19, 1103140), (20, 1047983), (38, 551570), (76, 275785), (95, 220628), (190, 110314), (361, 58060), (380, 55157), (722, 29030), (1444, 14515), (1805, 11612), (2903, 7220), (3610, 5806)]