21198675

素因数分解:

$3^1\times 5^2\times {\mathrm{53}}^1\times {\mathrm{5333}}^1$

素因数の和:5399

約数の個数: 24

約数和(自身を含む): 35716464

約数和(自身を除く): 14517789

約数列:

[1, 3, 5, 15, 25, 53, 75, 159, 265, 795, 1325, 3975, 5333, 15999, 26665, 79995, 133325, 282649, 399975, 847947, 1413245, 4239735, 7066225, 21198675]

約数ペア:

[(1, 21198675), (3, 7066225), (5, 4239735), (15, 1413245), (25, 847947), (53, 399975), (75, 282649), (159, 133325), (265, 79995), (795, 26665), (1325, 15999), (3975, 5333)]