81126160

素因数分解:

$2^4\times 5^1\times {\mathrm{239}}^1\times {\mathrm{4243}}^1$

素因数の和:4495

約数の個数: 40

約数和(自身を含む): 189452160

約数和(自身を除く): 108326000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 239, 478, 956, 1195, 1912, 2390, 3824, 4243, 4780, 8486, 9560, 16972, 19120, 21215, 33944, 42430, 67888, 84860, 169720, 339440, 1014077, 2028154, 4056308, 5070385, 8112616, 10140770, 16225232, 20281540, 40563080, 81126160]

約数ペア:

[(1, 81126160), (2, 40563080), (4, 20281540), (5, 16225232), (8, 10140770), (10, 8112616), (16, 5070385), (20, 4056308), (40, 2028154), (80, 1014077), (239, 339440), (478, 169720), (956, 84860), (1195, 67888), (1912, 42430), (2390, 33944), (3824, 21215), (4243, 19120), (4780, 16972), (8486, 9560)]