19977915

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{733}}^1$

素因数の和:843

約数の個数: 32

約数和(自身を含む): 33822720

約数和(自身を除く): 13844805

約数列:

[1, 3, 5, 15, 23, 69, 79, 115, 237, 345, 395, 733, 1185, 1817, 2199, 3665, 5451, 9085, 10995, 16859, 27255, 50577, 57907, 84295, 173721, 252885, 289535, 868605, 1331861, 3995583, 6659305, 19977915]

約数ペア:

[(1, 19977915), (3, 6659305), (5, 3995583), (15, 1331861), (23, 868605), (69, 289535), (79, 252885), (115, 173721), (237, 84295), (345, 57907), (395, 50577), (733, 27255), (1185, 16859), (1817, 10995), (2199, 9085), (3665, 5451)]