21095847

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{131}}^1\times {\mathrm{617}}^1$

素因数の和:783

約数の個数: 24

約数和(自身を含む): 31814640

約数和(自身を除く): 10718793

約数列:

[1, 3, 9, 29, 87, 131, 261, 393, 617, 1179, 1851, 3799, 5553, 11397, 17893, 34191, 53679, 80827, 161037, 242481, 727443, 2343983, 7031949, 21095847]

約数ペア:

[(1, 21095847), (3, 7031949), (9, 2343983), (29, 727443), (87, 242481), (131, 161037), (261, 80827), (393, 53679), (617, 34191), (1179, 17893), (1851, 11397), (3799, 5553)]