18764571

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{359}}^1$

素因数の和:519

約数の個数: 32

約数和(自身を含む): 30412800

約数和(自身を除く): 11648229

約数列:

[1, 3, 7, 19, 21, 57, 131, 133, 359, 393, 399, 917, 1077, 2489, 2513, 2751, 6821, 7467, 7539, 17423, 20463, 47029, 47747, 52269, 141087, 143241, 329203, 893551, 987609, 2680653, 6254857, 18764571]

約数ペア:

[(1, 18764571), (3, 6254857), (7, 2680653), (19, 987609), (21, 893551), (57, 329203), (131, 143241), (133, 141087), (359, 52269), (393, 47747), (399, 47029), (917, 20463), (1077, 17423), (2489, 7539), (2513, 7467), (2751, 6821)]