18506660

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1\times {\mathrm{281}}^1$

素因数の和:416

約数の個数: 48

約数和(自身を含む): 40506480

約数和(自身を除く): 21999820

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 89, 148, 178, 185, 281, 356, 370, 445, 562, 740, 890, 1124, 1405, 1780, 2810, 3293, 5620, 6586, 10397, 13172, 16465, 20794, 25009, 32930, 41588, 50018, 51985, 65860, 100036, 103970, 125045, 207940, 250090, 500180, 925333, 1850666, 3701332, 4626665, 9253330, 18506660]

約数ペア:

[(1, 18506660), (2, 9253330), (4, 4626665), (5, 3701332), (10, 1850666), (20, 925333), (37, 500180), (74, 250090), (89, 207940), (148, 125045), (178, 103970), (185, 100036), (281, 65860), (356, 51985), (370, 50018), (445, 41588), (562, 32930), (740, 25009), (890, 20794), (1124, 16465), (1405, 13172), (1780, 10397), (2810, 6586), (3293, 5620)]