18203975

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{283}}^1$

素因数の和:407

約数の個数: 24

約数和(自身を含む): 23665152

約数和(自身を除く): 5461177

約数列:

[1, 5, 25, 31, 83, 155, 283, 415, 775, 1415, 2075, 2573, 7075, 8773, 12865, 23489, 43865, 64325, 117445, 219325, 587225, 728159, 3640795, 18203975]

約数ペア:

[(1, 18203975), (5, 3640795), (25, 728159), (31, 587225), (83, 219325), (155, 117445), (283, 64325), (415, 43865), (775, 23489), (1415, 12865), (2075, 8773), (2573, 7075)]