281180440

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{163477}}^1$

素因数の和:163531

約数の個数: 32

約数和(自身を含む): 647372880

約数和(自身を除く): 366192440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 163477, 326954, 653908, 817385, 1307816, 1634770, 3269540, 6539080, 7029511, 14059022, 28118044, 35147555, 56236088, 70295110, 140590220, 281180440]

約数ペア:

[(1, 281180440), (2, 140590220), (4, 70295110), (5, 56236088), (8, 35147555), (10, 28118044), (20, 14059022), (40, 7029511), (43, 6539080), (86, 3269540), (172, 1634770), (215, 1307816), (344, 817385), (430, 653908), (860, 326954), (1720, 163477)]