20388760

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{72817}}^1$

素因数の和:72835

約数の個数: 32

約数和(自身を含む): 52428960

約数和(自身を除く): 32040200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 72817, 145634, 291268, 364085, 509719, 582536, 728170, 1019438, 1456340, 2038876, 2548595, 2912680, 4077752, 5097190, 10194380, 20388760]

約数ペア:

[(1, 20388760), (2, 10194380), (4, 5097190), (5, 4077752), (7, 2912680), (8, 2548595), (10, 2038876), (14, 1456340), (20, 1019438), (28, 728170), (35, 582536), (40, 509719), (56, 364085), (70, 291268), (140, 145634), (280, 72817)]