20893640

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{5869}}^1$

素因数の和:5969

約数の個数: 32

約数和(自身を含む): 47547000

約数和(自身を除く): 26653360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 5869, 11738, 23476, 29345, 46952, 58690, 117380, 234760, 522341, 1044682, 2089364, 2611705, 4178728, 5223410, 10446820, 20893640]

約数ペア:

[(1, 20893640), (2, 10446820), (4, 5223410), (5, 4178728), (8, 2611705), (10, 2089364), (20, 1044682), (40, 522341), (89, 234760), (178, 117380), (356, 58690), (445, 46952), (712, 29345), (890, 23476), (1780, 11738), (3560, 5869)]