20921478

素因数分解:

$2^1\times 3^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1\times {\mathrm{977}}^1$

素因数の和:1108

約数の個数: 32

約数和(自身を含む): 43376256

約数和(自身を除く): 22454778

約数列:

[1, 2, 3, 6, 43, 83, 86, 129, 166, 249, 258, 498, 977, 1954, 2931, 3569, 5862, 7138, 10707, 21414, 42011, 81091, 84022, 126033, 162182, 243273, 252066, 486546, 3486913, 6973826, 10460739, 20921478]

約数ペア:

[(1, 20921478), (2, 10460739), (3, 6973826), (6, 3486913), (43, 486546), (83, 252066), (86, 243273), (129, 162182), (166, 126033), (249, 84022), (258, 81091), (498, 42011), (977, 21414), (1954, 10707), (2931, 7138), (3569, 5862)]