20510127

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{163}}^1$

素因数の和:252

約数の個数: 48

約数和(自身を含む): 34384896

約数和(自身を除く): 13874769

約数列:

[1, 3, 9, 11, 31, 33, 41, 93, 99, 123, 163, 279, 341, 369, 451, 489, 1023, 1271, 1353, 1467, 1793, 3069, 3813, 4059, 5053, 5379, 6683, 11439, 13981, 15159, 16137, 20049, 41943, 45477, 55583, 60147, 73513, 125829, 166749, 207173, 220539, 500247, 621519, 661617, 1864557, 2278903, 6836709, 20510127]

約数ペア:

[(1, 20510127), (3, 6836709), (9, 2278903), (11, 1864557), (31, 661617), (33, 621519), (41, 500247), (93, 220539), (99, 207173), (123, 166749), (163, 125829), (279, 73513), (341, 60147), (369, 55583), (451, 45477), (489, 41943), (1023, 20049), (1271, 16137), (1353, 15159), (1467, 13981), (1793, 11439), (3069, 6683), (3813, 5379), (4059, 5053)]