21195420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{15359}}^1$

素因数の和:15394

約数の個数: 48

約数和(自身を含む): 61931520

約数和(自身を除く): 40736100

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 23, 30, 46, 60, 69, 92, 115, 138, 230, 276, 345, 460, 690, 1380, 15359, 30718, 46077, 61436, 76795, 92154, 153590, 184308, 230385, 307180, 353257, 460770, 706514, 921540, 1059771, 1413028, 1766285, 2119542, 3532570, 4239084, 5298855, 7065140, 10597710, 21195420]

約数ペア:

[(1, 21195420), (2, 10597710), (3, 7065140), (4, 5298855), (5, 4239084), (6, 3532570), (10, 2119542), (12, 1766285), (15, 1413028), (20, 1059771), (23, 921540), (30, 706514), (46, 460770), (60, 353257), (69, 307180), (92, 230385), (115, 184308), (138, 153590), (230, 92154), (276, 76795), (345, 61436), (460, 46077), (690, 30718), (1380, 15359)]