19702640

素因数分解:

$2^4\times 5^1\times {\mathrm{97}}^1\times {\mathrm{2539}}^1$

素因数の和:2649

約数の個数: 40

約数和(自身を含む): 46299120

約数和(自身を除く): 26596480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 97, 194, 388, 485, 776, 970, 1552, 1940, 2539, 3880, 5078, 7760, 10156, 12695, 20312, 25390, 40624, 50780, 101560, 203120, 246283, 492566, 985132, 1231415, 1970264, 2462830, 3940528, 4925660, 9851320, 19702640]

約数ペア:

[(1, 19702640), (2, 9851320), (4, 4925660), (5, 3940528), (8, 2462830), (10, 1970264), (16, 1231415), (20, 985132), (40, 492566), (80, 246283), (97, 203120), (194, 101560), (388, 50780), (485, 40624), (776, 25390), (970, 20312), (1552, 12695), (1940, 10156), (2539, 7760), (3880, 5078)]