20867925

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1259}}^1$

素因数の和:1302

約数の個数: 48

約数和(自身を含む): 39372480

約数和(自身を除く): 18504555

約数列:

[1, 3, 5, 13, 15, 17, 25, 39, 51, 65, 75, 85, 195, 221, 255, 325, 425, 663, 975, 1105, 1259, 1275, 3315, 3777, 5525, 6295, 16367, 16575, 18885, 21403, 31475, 49101, 64209, 81835, 94425, 107015, 245505, 278239, 321045, 409175, 535075, 834717, 1227525, 1391195, 1605225, 4173585, 6955975, 20867925]

約数ペア:

[(1, 20867925), (3, 6955975), (5, 4173585), (13, 1605225), (15, 1391195), (17, 1227525), (25, 834717), (39, 535075), (51, 409175), (65, 321045), (75, 278239), (85, 245505), (195, 107015), (221, 94425), (255, 81835), (325, 64209), (425, 49101), (663, 31475), (975, 21403), (1105, 18885), (1259, 16575), (1275, 16367), (3315, 6295), (3777, 5525)]