645252875

素因数分解:

$5^3\times {\mathrm{41}}^1\times {\mathrm{137}}^1\times {\mathrm{919}}^1$

素因数の和:1112

約数の個数: 32

約数和(自身を含む): 831841920

約数和(自身を除く): 186589045

約数列:

[1, 5, 25, 41, 125, 137, 205, 685, 919, 1025, 3425, 4595, 5125, 5617, 17125, 22975, 28085, 37679, 114875, 125903, 140425, 188395, 629515, 702125, 941975, 3147575, 4709875, 5162023, 15737875, 25810115, 129050575, 645252875]

約数ペア:

[(1, 645252875), (5, 129050575), (25, 25810115), (41, 15737875), (125, 5162023), (137, 4709875), (205, 3147575), (685, 941975), (919, 702125), (1025, 629515), (3425, 188395), (4595, 140425), (5125, 125903), (5617, 114875), (17125, 37679), (22975, 28085)]