30420740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{1103}}^1$

素因数の和:1316

約数の個数: 48

約数和(自身を含む): 73446912

約数和(自身を除く): 43026172

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 197, 394, 788, 985, 1103, 1379, 1970, 2206, 2758, 3940, 4412, 5515, 5516, 6895, 7721, 11030, 13790, 15442, 22060, 27580, 30884, 38605, 77210, 154420, 217291, 434582, 869164, 1086455, 1521037, 2172910, 3042074, 4345820, 6084148, 7605185, 15210370, 30420740]

約数ペア:

[(1, 30420740), (2, 15210370), (4, 7605185), (5, 6084148), (7, 4345820), (10, 3042074), (14, 2172910), (20, 1521037), (28, 1086455), (35, 869164), (70, 434582), (140, 217291), (197, 154420), (394, 77210), (788, 38605), (985, 30884), (1103, 27580), (1379, 22060), (1970, 15442), (2206, 13790), (2758, 11030), (3940, 7721), (4412, 6895), (5515, 5516)]