7721980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{2903}}^1$

素因数の和:2938

約数の個数: 48

約数和(自身を含む): 19514880

約数和(自身を除く): 11792900

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 76, 95, 133, 140, 190, 266, 380, 532, 665, 1330, 2660, 2903, 5806, 11612, 14515, 20321, 29030, 40642, 55157, 58060, 81284, 101605, 110314, 203210, 220628, 275785, 386099, 406420, 551570, 772198, 1103140, 1544396, 1930495, 3860990, 7721980]

約数ペア:

[(1, 7721980), (2, 3860990), (4, 1930495), (5, 1544396), (7, 1103140), (10, 772198), (14, 551570), (19, 406420), (20, 386099), (28, 275785), (35, 220628), (38, 203210), (70, 110314), (76, 101605), (95, 81284), (133, 58060), (140, 55157), (190, 40642), (266, 29030), (380, 20321), (532, 14515), (665, 11612), (1330, 5806), (2660, 2903)]