20156680

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{11719}}^1$

素因数の和:11773

約数の個数: 32

約数和(自身を含む): 46411200

約数和(自身を除く): 26254520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 11719, 23438, 46876, 58595, 93752, 117190, 234380, 468760, 503917, 1007834, 2015668, 2519585, 4031336, 5039170, 10078340, 20156680]

約数ペア:

[(1, 20156680), (2, 10078340), (4, 5039170), (5, 4031336), (8, 2519585), (10, 2015668), (20, 1007834), (40, 503917), (43, 468760), (86, 234380), (172, 117190), (215, 93752), (344, 58595), (430, 46876), (860, 23438), (1720, 11719)]