21005025

素因数分解:

$3^1\times 5^2\times {\mathrm{229}}^1\times {\mathrm{1223}}^1$

素因数の和:1465

約数の個数: 24

約数和(自身を含む): 34908480

約数和(自身を除く): 13903455

約数列:

[1, 3, 5, 15, 25, 75, 229, 687, 1145, 1223, 3435, 3669, 5725, 6115, 17175, 18345, 30575, 91725, 280067, 840201, 1400335, 4201005, 7001675, 21005025]

約数ペア:

[(1, 21005025), (3, 7001675), (5, 4201005), (15, 1400335), (25, 840201), (75, 280067), (229, 91725), (687, 30575), (1145, 18345), (1223, 17175), (3435, 6115), (3669, 5725)]