81252280

素因数分解:

$2^3\times 5^1\times {\mathrm{223}}^1\times {\mathrm{9109}}^1$

素因数の和:9343

約数の個数: 32

約数和(自身を含む): 183657600

約数和(自身を除く): 102405320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 223, 446, 892, 1115, 1784, 2230, 4460, 8920, 9109, 18218, 36436, 45545, 72872, 91090, 182180, 364360, 2031307, 4062614, 8125228, 10156535, 16250456, 20313070, 40626140, 81252280]

約数ペア:

[(1, 81252280), (2, 40626140), (4, 20313070), (5, 16250456), (8, 10156535), (10, 8125228), (20, 4062614), (40, 2031307), (223, 364360), (446, 182180), (892, 91090), (1115, 72872), (1784, 45545), (2230, 36436), (4460, 18218), (8920, 9109)]