21078075

素因数分解:

$3^1\times 5^2\times {\mathrm{463}}^1\times {\mathrm{607}}^1$

素因数の和:1083

約数の個数: 24

約数和(自身を含む): 34981888

約数和(自身を除く): 13903813

約数列:

[1, 3, 5, 15, 25, 75, 463, 607, 1389, 1821, 2315, 3035, 6945, 9105, 11575, 15175, 34725, 45525, 281041, 843123, 1405205, 4215615, 7026025, 21078075]

約数ペア:

[(1, 21078075), (3, 7026025), (5, 4215615), (15, 1405205), (25, 843123), (75, 281041), (463, 45525), (607, 34725), (1389, 15175), (1821, 11575), (2315, 9105), (3035, 6945)]