180908020

素因数分解:

$2^2\times 5^1\times {\mathrm{457}}^1\times {\mathrm{19793}}^1$

素因数の和:20259

約数の個数: 24

約数和(自身を含む): 380757384

約数和(自身を除く): 199849364

約数列:

[1, 2, 4, 5, 10, 20, 457, 914, 1828, 2285, 4570, 9140, 19793, 39586, 79172, 98965, 197930, 395860, 9045401, 18090802, 36181604, 45227005, 90454010, 180908020]

約数ペア:

[(1, 180908020), (2, 90454010), (4, 45227005), (5, 36181604), (10, 18090802), (20, 9045401), (457, 395860), (914, 197930), (1828, 98965), (2285, 79172), (4570, 39586), (9140, 19793)]