19800715

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{173}}^1\times {\mathrm{2081}}^1$

素因数の和:2270

約数の個数: 16

約数和(自身を含む): 26083296

約数和(自身を除く): 6282581

約数列:

[1, 5, 11, 55, 173, 865, 1903, 2081, 9515, 10405, 22891, 114455, 360013, 1800065, 3960143, 19800715]

約数ペア:

[(1, 19800715), (5, 3960143), (11, 1800065), (55, 360013), (173, 114455), (865, 22891), (1903, 10405), (2081, 9515)]