20672564

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{5279}}^1$

素因数の和:5383

約数の個数: 24

約数和(自身を含む): 39916800

約数和(自身を除く): 19244236

約数列:

[1, 2, 4, 11, 22, 44, 89, 178, 356, 979, 1958, 3916, 5279, 10558, 21116, 58069, 116138, 232276, 469831, 939662, 1879324, 5168141, 10336282, 20672564]

約数ペア:

[(1, 20672564), (2, 10336282), (4, 5168141), (11, 1879324), (22, 939662), (44, 469831), (89, 232276), (178, 116138), (356, 58069), (979, 21116), (1958, 10558), (3916, 5279)]