21361015

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{10601}}^1$

素因数の和:10650

約数の個数: 16

約数和(自身を含む): 28498176

約数和(自身を除く): 7137161

約数列:

[1, 5, 13, 31, 65, 155, 403, 2015, 10601, 53005, 137813, 328631, 689065, 1643155, 4272203, 21361015]

約数ペア:

[(1, 21361015), (5, 4272203), (13, 1643155), (31, 689065), (65, 328631), (155, 137813), (403, 53005), (2015, 10601)]