20432080

素因数分解:

$2^4\times 5^1\times {\mathrm{97}}^1\times {\mathrm{2633}}^1$

素因数の和:2743

約数の個数: 40

約数和(自身を含む): 48012552

約数和(自身を除く): 27580472

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 97, 194, 388, 485, 776, 970, 1552, 1940, 2633, 3880, 5266, 7760, 10532, 13165, 21064, 26330, 42128, 52660, 105320, 210640, 255401, 510802, 1021604, 1277005, 2043208, 2554010, 4086416, 5108020, 10216040, 20432080]

約数ペア:

[(1, 20432080), (2, 10216040), (4, 5108020), (5, 4086416), (8, 2554010), (10, 2043208), (16, 1277005), (20, 1021604), (40, 510802), (80, 255401), (97, 210640), (194, 105320), (388, 52660), (485, 42128), (776, 26330), (970, 21064), (1552, 13165), (1940, 10532), (2633, 7760), (3880, 5266)]