20280760

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{5227}}^1$

素因数の和:5335

約数の個数: 32

約数和(自身を含む): 46110960

約数和(自身を除く): 25830200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940, 3880, 5227, 10454, 20908, 26135, 41816, 52270, 104540, 209080, 507019, 1014038, 2028076, 2535095, 4056152, 5070190, 10140380, 20280760]

約数ペア:

[(1, 20280760), (2, 10140380), (4, 5070190), (5, 4056152), (8, 2535095), (10, 2028076), (20, 1014038), (40, 507019), (97, 209080), (194, 104540), (388, 52270), (485, 41816), (776, 26135), (970, 20908), (1940, 10454), (3880, 5227)]