20565125

素因数分解:

$5^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{1237}}^1$

素因数の和:1278

約数の個数: 32

約数和(自身を含む): 30900480

約数和(自身を除く): 10335355

約数列:

[1, 5, 7, 19, 25, 35, 95, 125, 133, 175, 475, 665, 875, 1237, 2375, 3325, 6185, 8659, 16625, 23503, 30925, 43295, 117515, 154625, 164521, 216475, 587575, 822605, 1082375, 2937875, 4113025, 20565125]

約数ペア:

[(1, 20565125), (5, 4113025), (7, 2937875), (19, 1082375), (25, 822605), (35, 587575), (95, 216475), (125, 164521), (133, 154625), (175, 117515), (475, 43295), (665, 30925), (875, 23503), (1237, 16625), (2375, 8659), (3325, 6185)]