28356020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{18413}}^1$

素因数の和:18440

約数の個数: 48

約数和(自身を含む): 74245248

約数和(自身を除く): 45889228

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 18413, 36826, 73652, 92065, 128891, 184130, 202543, 257782, 368260, 405086, 515564, 644455, 810172, 1012715, 1288910, 1417801, 2025430, 2577820, 2835602, 4050860, 5671204, 7089005, 14178010, 28356020]

約数ペア:

[(1, 28356020), (2, 14178010), (4, 7089005), (5, 5671204), (7, 4050860), (10, 2835602), (11, 2577820), (14, 2025430), (20, 1417801), (22, 1288910), (28, 1012715), (35, 810172), (44, 644455), (55, 515564), (70, 405086), (77, 368260), (110, 257782), (140, 202543), (154, 184130), (220, 128891), (308, 92065), (385, 73652), (770, 36826), (1540, 18413)]