21815012165

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{113}}^1\times {\mathrm{43237}}^1$

素因数の和:43421

約数の個数: 32

約数和(自身を含む): 28391800320

約数和(自身を除く): 6576788155

約数列:

[1, 5, 19, 47, 95, 113, 235, 565, 893, 2147, 4465, 5311, 10735, 26555, 43237, 100909, 216185, 504545, 821503, 2032139, 4107515, 4885781, 10160695, 24428905, 38610641, 92829839, 193053205, 229631707, 464149195, 1148158535, 4363002433, 21815012165]

約数ペア:

[(1, 21815012165), (5, 4363002433), (19, 1148158535), (47, 464149195), (95, 229631707), (113, 193053205), (235, 92829839), (565, 38610641), (893, 24428905), (2147, 10160695), (4465, 4885781), (5311, 4107515), (10735, 2032139), (26555, 821503), (43237, 504545), (100909, 216185)]