20391490

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{9397}}^1$

素因数の和:9442

約数の個数: 32

約数和(自身を含む): 43305984

約数和(自身を除く): 22914494

約数列:

[1, 2, 5, 7, 10, 14, 31, 35, 62, 70, 155, 217, 310, 434, 1085, 2170, 9397, 18794, 46985, 65779, 93970, 131558, 291307, 328895, 582614, 657790, 1456535, 2039149, 2913070, 4078298, 10195745, 20391490]

約数ペア:

[(1, 20391490), (2, 10195745), (5, 4078298), (7, 2913070), (10, 2039149), (14, 1456535), (31, 657790), (35, 582614), (62, 328895), (70, 291307), (155, 131558), (217, 93970), (310, 65779), (434, 46985), (1085, 18794), (2170, 9397)]