90807787

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{101}}^1\times {\mathrm{103}}^1$

素因数の和:283

約数の個数: 32

約数和(自身を含む): 112020480

約数和(自身を除く): 21212693

約数列:

[1, 7, 29, 43, 101, 103, 203, 301, 707, 721, 1247, 2929, 2987, 4343, 4429, 8729, 10403, 20503, 20909, 30401, 31003, 72821, 125947, 128441, 301687, 447329, 881629, 899087, 2111809, 3131303, 12972541, 90807787]

約数ペア:

[(1, 90807787), (7, 12972541), (29, 3131303), (43, 2111809), (101, 899087), (103, 881629), (203, 447329), (301, 301687), (707, 128441), (721, 125947), (1247, 72821), (2929, 31003), (2987, 30401), (4343, 20909), (4429, 20503), (8729, 10403)]