81470080

素因数分解:

$2^7\times 5^1\times {\mathrm{127297}}^1$

素因数の和:127316

約数の個数: 32

約数和(自身を含む): 194765940

約数和(自身を除く): 113295860

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 127297, 254594, 509188, 636485, 1018376, 1272970, 2036752, 2545940, 4073504, 5091880, 8147008, 10183760, 16294016, 20367520, 40735040, 81470080]

約数ペア:

[(1, 81470080), (2, 40735040), (4, 20367520), (5, 16294016), (8, 10183760), (10, 8147008), (16, 5091880), (20, 4073504), (32, 2545940), (40, 2036752), (64, 1272970), (80, 1018376), (128, 636485), (160, 509188), (320, 254594), (640, 127297)]