18739400

素因数分解:

$2^3\times 5^2\times {\mathrm{43}}^1\times {\mathrm{2179}}^1$

素因数の和:2238

約数の個数: 48

約数和(自身を含む): 44602800

約数和(自身を除く): 25863400

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 43, 50, 86, 100, 172, 200, 215, 344, 430, 860, 1075, 1720, 2150, 2179, 4300, 4358, 8600, 8716, 10895, 17432, 21790, 43580, 54475, 87160, 93697, 108950, 187394, 217900, 374788, 435800, 468485, 749576, 936970, 1873940, 2342425, 3747880, 4684850, 9369700, 18739400]

約数ペア:

[(1, 18739400), (2, 9369700), (4, 4684850), (5, 3747880), (8, 2342425), (10, 1873940), (20, 936970), (25, 749576), (40, 468485), (43, 435800), (50, 374788), (86, 217900), (100, 187394), (172, 108950), (200, 93697), (215, 87160), (344, 54475), (430, 43580), (860, 21790), (1075, 17432), (1720, 10895), (2150, 8716), (2179, 8600), (4300, 4358)]