20569785

素因数分解:

$3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{163}}^1\times {\mathrm{179}}^1$

素因数の和:397

約数の個数: 32

約数和(自身を含む): 34007040

約数和(自身を除く): 13437255

約数列:

[1, 3, 5, 15, 47, 141, 163, 179, 235, 489, 537, 705, 815, 895, 2445, 2685, 7661, 8413, 22983, 25239, 29177, 38305, 42065, 87531, 114915, 126195, 145885, 437655, 1371319, 4113957, 6856595, 20569785]

約数ペア:

[(1, 20569785), (3, 6856595), (5, 4113957), (15, 1371319), (47, 437655), (141, 145885), (163, 126195), (179, 114915), (235, 87531), (489, 42065), (537, 38305), (705, 29177), (815, 25239), (895, 22983), (2445, 8413), (2685, 7661)]