21601875

素因数分解:

$3^1\times 5^4\times {\mathrm{41}}^1\times {\mathrm{281}}^1$

素因数の和:345

約数の個数: 40

約数和(自身を含む): 37000656

約数和(自身を除く): 15398781

約数列:

[1, 3, 5, 15, 25, 41, 75, 123, 125, 205, 281, 375, 615, 625, 843, 1025, 1405, 1875, 3075, 4215, 5125, 7025, 11521, 15375, 21075, 25625, 34563, 35125, 57605, 76875, 105375, 172815, 175625, 288025, 526875, 864075, 1440125, 4320375, 7200625, 21601875]

約数ペア:

[(1, 21601875), (3, 7200625), (5, 4320375), (15, 1440125), (25, 864075), (41, 526875), (75, 288025), (123, 175625), (125, 172815), (205, 105375), (281, 76875), (375, 57605), (615, 35125), (625, 34563), (843, 25625), (1025, 21075), (1405, 15375), (1875, 11521), (3075, 7025), (4215, 5125)]