20825625

素因数分解:

$3^1\times 5^4\times {\mathrm{29}}^1\times {\mathrm{383}}^1$

素因数の和:435

約数の個数: 40

約数和(自身を含む): 35988480

約数和(自身を除く): 15162855

約数列:

[1, 3, 5, 15, 25, 29, 75, 87, 125, 145, 375, 383, 435, 625, 725, 1149, 1875, 1915, 2175, 3625, 5745, 9575, 10875, 11107, 18125, 28725, 33321, 47875, 54375, 55535, 143625, 166605, 239375, 277675, 718125, 833025, 1388375, 4165125, 6941875, 20825625]

約数ペア:

[(1, 20825625), (3, 6941875), (5, 4165125), (15, 1388375), (25, 833025), (29, 718125), (75, 277675), (87, 239375), (125, 166605), (145, 143625), (375, 55535), (383, 54375), (435, 47875), (625, 33321), (725, 28725), (1149, 18125), (1875, 11107), (1915, 10875), (2175, 9575), (3625, 5745)]