21624825

素因数分解:

$3^1\times 5^2\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1$

素因数の和:246

約数の個数: 48

約数和(自身を含む): 37711872

約数和(自身を除く): 16087047

約数列:

[1, 3, 5, 15, 25, 31, 71, 75, 93, 131, 155, 213, 355, 393, 465, 655, 775, 1065, 1775, 1965, 2201, 2325, 3275, 4061, 5325, 6603, 9301, 9825, 11005, 12183, 20305, 27903, 33015, 46505, 55025, 60915, 101525, 139515, 165075, 232525, 288331, 304575, 697575, 864993, 1441655, 4324965, 7208275, 21624825]

約数ペア:

[(1, 21624825), (3, 7208275), (5, 4324965), (15, 1441655), (25, 864993), (31, 697575), (71, 304575), (75, 288331), (93, 232525), (131, 165075), (155, 139515), (213, 101525), (355, 60915), (393, 55025), (465, 46505), (655, 33015), (775, 27903), (1065, 20305), (1775, 12183), (1965, 11005), (2201, 9825), (2325, 9301), (3275, 6603), (4061, 5325)]