21804375

素因数分解:

$3^1\times 5^4\times {\mathrm{29}}^1\times {\mathrm{401}}^1$

素因数の和:453

約数の個数: 40

約数和(自身を含む): 37675440

約数和(自身を除く): 15871065

約数列:

[1, 3, 5, 15, 25, 29, 75, 87, 125, 145, 375, 401, 435, 625, 725, 1203, 1875, 2005, 2175, 3625, 6015, 10025, 10875, 11629, 18125, 30075, 34887, 50125, 54375, 58145, 150375, 174435, 250625, 290725, 751875, 872175, 1453625, 4360875, 7268125, 21804375]

約数ペア:

[(1, 21804375), (3, 7268125), (5, 4360875), (15, 1453625), (25, 872175), (29, 751875), (75, 290725), (87, 250625), (125, 174435), (145, 150375), (375, 58145), (401, 54375), (435, 50125), (625, 34887), (725, 30075), (1203, 18125), (1875, 11629), (2005, 10875), (2175, 10025), (3625, 6015)]