19912160

素因数分解:

$2^5\times 5^1\times {\mathrm{97}}^1\times {\mathrm{1283}}^1$

素因数の和:1395

約数の個数: 48

約数和(自身を含む): 47564496

約数和(自身を除く): 27652336

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 97, 160, 194, 388, 485, 776, 970, 1283, 1552, 1940, 2566, 3104, 3880, 5132, 6415, 7760, 10264, 12830, 15520, 20528, 25660, 41056, 51320, 102640, 124451, 205280, 248902, 497804, 622255, 995608, 1244510, 1991216, 2489020, 3982432, 4978040, 9956080, 19912160]

約数ペア:

[(1, 19912160), (2, 9956080), (4, 4978040), (5, 3982432), (8, 2489020), (10, 1991216), (16, 1244510), (20, 995608), (32, 622255), (40, 497804), (80, 248902), (97, 205280), (160, 124451), (194, 102640), (388, 51320), (485, 41056), (776, 25660), (970, 20528), (1283, 15520), (1552, 12830), (1940, 10264), (2566, 7760), (3104, 6415), (3880, 5132)]