20401575

素因数分解:

$3^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{11827}}^1$

素因数の和:11863

約数の個数: 24

約数和(自身を含む): 35200128

約数和(自身を除く): 14798553

約数列:

[1, 3, 5, 15, 23, 25, 69, 75, 115, 345, 575, 1725, 11827, 35481, 59135, 177405, 272021, 295675, 816063, 887025, 1360105, 4080315, 6800525, 20401575]

約数ペア:

[(1, 20401575), (3, 6800525), (5, 4080315), (15, 1360105), (23, 887025), (25, 816063), (69, 295675), (75, 272021), (115, 177405), (345, 59135), (575, 35481), (1725, 11827)]