21355875

素因数分解:

$3^2\times 5^3\times {\mathrm{41}}^1\times {\mathrm{463}}^1$

素因数の和:525

約数の個数: 48

約数和(自身を含む): 39521664

約数和(自身を除く): 18165789

約数列:

[1, 3, 5, 9, 15, 25, 41, 45, 75, 123, 125, 205, 225, 369, 375, 463, 615, 1025, 1125, 1389, 1845, 2315, 3075, 4167, 5125, 6945, 9225, 11575, 15375, 18983, 20835, 34725, 46125, 56949, 57875, 94915, 104175, 170847, 173625, 284745, 474575, 520875, 854235, 1423725, 2372875, 4271175, 7118625, 21355875]

約数ペア:

[(1, 21355875), (3, 7118625), (5, 4271175), (9, 2372875), (15, 1423725), (25, 854235), (41, 520875), (45, 474575), (75, 284745), (123, 173625), (125, 170847), (205, 104175), (225, 94915), (369, 57875), (375, 56949), (463, 46125), (615, 34725), (1025, 20835), (1125, 18983), (1389, 15375), (1845, 11575), (2315, 9225), (3075, 6945), (4167, 5125)]