80341720

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{18427}}^1$

素因数の和:18547

約数の個数: 32

約数和(自身を含む): 182437200

約数和(自身を除く): 102095480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 18427, 36854, 73708, 92135, 147416, 184270, 368540, 737080, 2008543, 4017086, 8034172, 10042715, 16068344, 20085430, 40170860, 80341720]

約数ペア:

[(1, 80341720), (2, 40170860), (4, 20085430), (5, 16068344), (8, 10042715), (10, 8034172), (20, 4017086), (40, 2008543), (109, 737080), (218, 368540), (436, 184270), (545, 147416), (872, 92135), (1090, 73708), (2180, 36854), (4360, 18427)]