18901540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{1709}}^1$

素因数の和:1804

約数の個数: 48

約数和(自身を含む): 45964800

約数和(自身を除く): 27063260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 79, 140, 158, 316, 395, 553, 790, 1106, 1580, 1709, 2212, 2765, 3418, 5530, 6836, 8545, 11060, 11963, 17090, 23926, 34180, 47852, 59815, 119630, 135011, 239260, 270022, 540044, 675055, 945077, 1350110, 1890154, 2700220, 3780308, 4725385, 9450770, 18901540]

約数ペア:

[(1, 18901540), (2, 9450770), (4, 4725385), (5, 3780308), (7, 2700220), (10, 1890154), (14, 1350110), (20, 945077), (28, 675055), (35, 540044), (70, 270022), (79, 239260), (140, 135011), (158, 119630), (316, 59815), (395, 47852), (553, 34180), (790, 23926), (1106, 17090), (1580, 11963), (1709, 11060), (2212, 8545), (2765, 6836), (3418, 5530)]