20723720

素因数分解:

$2^3\times 5^1\times {\mathrm{379}}^1\times {\mathrm{1367}}^1$

素因数の和:1757

約数の個数: 32

約数和(自身を含む): 46785600

約数和(自身を除く): 26061880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 379, 758, 1367, 1516, 1895, 2734, 3032, 3790, 5468, 6835, 7580, 10936, 13670, 15160, 27340, 54680, 518093, 1036186, 2072372, 2590465, 4144744, 5180930, 10361860, 20723720]

約数ペア:

[(1, 20723720), (2, 10361860), (4, 5180930), (5, 4144744), (8, 2590465), (10, 2072372), (20, 1036186), (40, 518093), (379, 54680), (758, 27340), (1367, 15160), (1516, 13670), (1895, 10936), (2734, 7580), (3032, 6835), (3790, 5468)]