20019280

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{8629}}^1$

素因数の和:8671

約数の個数: 40

約数和(自身を含む): 48155400

約数和(自身を除く): 28136120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 58, 80, 116, 145, 232, 290, 464, 580, 1160, 2320, 8629, 17258, 34516, 43145, 69032, 86290, 138064, 172580, 250241, 345160, 500482, 690320, 1000964, 1251205, 2001928, 2502410, 4003856, 5004820, 10009640, 20019280]

約数ペア:

[(1, 20019280), (2, 10009640), (4, 5004820), (5, 4003856), (8, 2502410), (10, 2001928), (16, 1251205), (20, 1000964), (29, 690320), (40, 500482), (58, 345160), (80, 250241), (116, 172580), (145, 138064), (232, 86290), (290, 69032), (464, 43145), (580, 34516), (1160, 17258), (2320, 8629)]