21591580

素因数分解:

$2^2\times 5^1\times {\mathrm{743}}^1\times {\mathrm{1453}}^1$

素因数の和:2205

約数の個数: 24

約数和(自身を含む): 45434592

約数和(自身を除く): 23843012

約数列:

[1, 2, 4, 5, 10, 20, 743, 1453, 1486, 2906, 2972, 3715, 5812, 7265, 7430, 14530, 14860, 29060, 1079579, 2159158, 4318316, 5397895, 10795790, 21591580]

約数ペア:

[(1, 21591580), (2, 10795790), (4, 5397895), (5, 4318316), (10, 2159158), (20, 1079579), (743, 29060), (1453, 14860), (1486, 14530), (2906, 7430), (2972, 7265), (3715, 5812)]