20308496

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{599}}^1$

素因数の和:783

約数の個数: 40

約数和(自身を含む): 42705600

約数和(自身を除く): 22397104

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 163, 208, 326, 599, 652, 1198, 1304, 2119, 2396, 2608, 4238, 4792, 7787, 8476, 9584, 15574, 16952, 31148, 33904, 62296, 97637, 124592, 195274, 390548, 781096, 1269281, 1562192, 2538562, 5077124, 10154248, 20308496]

約数ペア:

[(1, 20308496), (2, 10154248), (4, 5077124), (8, 2538562), (13, 1562192), (16, 1269281), (26, 781096), (52, 390548), (104, 195274), (163, 124592), (208, 97637), (326, 62296), (599, 33904), (652, 31148), (1198, 16952), (1304, 15574), (2119, 9584), (2396, 8476), (2608, 7787), (4238, 4792)]