21497899505

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{313}}^1\times {\mathrm{722983}}^1$

素因数の和:723320

約数の個数: 16

約数和(自身を含む): 27242037120

約数和(自身を除く): 5744137615

約数列:

[1, 5, 19, 95, 313, 1565, 5947, 29735, 722983, 3614915, 13736677, 68683385, 226293679, 1131468395, 4299579901, 21497899505]

約数ペア:

[(1, 21497899505), (5, 4299579901), (19, 1131468395), (95, 226293679), (313, 68683385), (1565, 13736677), (5947, 3614915), (29735, 722983)]