21669040

素因数分解:

$2^4\times 5^1\times {\mathrm{439}}^1\times {\mathrm{617}}^1$

素因数の和:1069

約数の個数: 40

約数和(自身を含む): 50577120

約数和(自身を除く): 28908080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 439, 617, 878, 1234, 1756, 2195, 2468, 3085, 3512, 4390, 4936, 6170, 7024, 8780, 9872, 12340, 17560, 24680, 35120, 49360, 270863, 541726, 1083452, 1354315, 2166904, 2708630, 4333808, 5417260, 10834520, 21669040]

約数ペア:

[(1, 21669040), (2, 10834520), (4, 5417260), (5, 4333808), (8, 2708630), (10, 2166904), (16, 1354315), (20, 1083452), (40, 541726), (80, 270863), (439, 49360), (617, 35120), (878, 24680), (1234, 17560), (1756, 12340), (2195, 9872), (2468, 8780), (3085, 7024), (3512, 6170), (4390, 4936)]