20378175

素因数分解:

$3^1\times 5^2\times {\mathrm{167}}^1\times {\mathrm{1627}}^1$

素因数の和:1807

約数の個数: 24

約数和(自身を含む): 33914496

約数和(自身を除く): 13536321

約数列:

[1, 3, 5, 15, 25, 75, 167, 501, 835, 1627, 2505, 4175, 4881, 8135, 12525, 24405, 40675, 122025, 271709, 815127, 1358545, 4075635, 6792725, 20378175]

約数ペア:

[(1, 20378175), (3, 6792725), (5, 4075635), (15, 1358545), (25, 815127), (75, 271709), (167, 122025), (501, 40675), (835, 24405), (1627, 12525), (2505, 8135), (4175, 4881)]