842840

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{1109}}^1$

素因数の和:1139

約数の個数: 32

約数和(自身を含む): 1998000

約数和(自身を除く): 1155160

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 1109, 2218, 4436, 5545, 8872, 11090, 21071, 22180, 42142, 44360, 84284, 105355, 168568, 210710, 421420, 842840]

約数ペア:

[(1, 842840), (2, 421420), (4, 210710), (5, 168568), (8, 105355), (10, 84284), (19, 44360), (20, 42142), (38, 22180), (40, 21071), (76, 11090), (95, 8872), (152, 5545), (190, 4436), (380, 2218), (760, 1109)]