28262480

素因数分解:

$2^4\times 5^1\times {\mathrm{401}}^1\times {\mathrm{881}}^1$

素因数の和:1295

約数の個数: 40

約数和(自身を含む): 65948904

約数和(自身を除く): 37686424

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 401, 802, 881, 1604, 1762, 2005, 3208, 3524, 4010, 4405, 6416, 7048, 8020, 8810, 14096, 16040, 17620, 32080, 35240, 70480, 353281, 706562, 1413124, 1766405, 2826248, 3532810, 5652496, 7065620, 14131240, 28262480]

約数ペア:

[(1, 28262480), (2, 14131240), (4, 7065620), (5, 5652496), (8, 3532810), (10, 2826248), (16, 1766405), (20, 1413124), (40, 706562), (80, 353281), (401, 70480), (802, 35240), (881, 32080), (1604, 17620), (1762, 16040), (2005, 14096), (3208, 8810), (3524, 8020), (4010, 7048), (4405, 6416)]