18785720

素因数分解:

$2^3\times 5^1\times {\mathrm{271}}^1\times {\mathrm{1733}}^1$

素因数の和:2015

約数の個数: 32

約数和(自身を含む): 42448320

約数和(自身を除く): 23662600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 271, 542, 1084, 1355, 1733, 2168, 2710, 3466, 5420, 6932, 8665, 10840, 13864, 17330, 34660, 69320, 469643, 939286, 1878572, 2348215, 3757144, 4696430, 9392860, 18785720]

約数ペア:

[(1, 18785720), (2, 9392860), (4, 4696430), (5, 3757144), (8, 2348215), (10, 1878572), (20, 939286), (40, 469643), (271, 69320), (542, 34660), (1084, 17330), (1355, 13864), (1733, 10840), (2168, 8665), (2710, 6932), (3466, 5420)]