19804505

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{18253}}^1$

素因数の和:18296

約数の個数: 16

約数和(自身を含む): 28038144

約数和(自身を除く): 8233639

約数列:

[1, 5, 7, 31, 35, 155, 217, 1085, 18253, 91265, 127771, 565843, 638855, 2829215, 3960901, 19804505]

約数ペア:

[(1, 19804505), (5, 3960901), (7, 2829215), (31, 638855), (35, 565843), (155, 127771), (217, 91265), (1085, 18253)]