21267135

素因数分解:

$3^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{2399}}^1$

素因数の和:2607

約数の個数: 24

約数和(自身を含む): 37065600

約数和(自身を除く): 15798465

約数列:

[1, 3, 5, 9, 15, 45, 197, 591, 985, 1773, 2399, 2955, 7197, 8865, 11995, 21591, 35985, 107955, 472603, 1417809, 2363015, 4253427, 7089045, 21267135]

約数ペア:

[(1, 21267135), (3, 7089045), (5, 4253427), (9, 2363015), (15, 1417809), (45, 472603), (197, 107955), (591, 35985), (985, 21591), (1773, 11995), (2399, 8865), (2955, 7197)]