18741380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{263}}^1\times {\mathrm{509}}^1$

素因数の和:788

約数の個数: 48

約数和(自身を含む): 45239040

約数和(自身を除く): 26497660

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 263, 509, 526, 1018, 1052, 1315, 1841, 2036, 2545, 2630, 3563, 3682, 5090, 5260, 7126, 7364, 9205, 10180, 14252, 17815, 18410, 35630, 36820, 71260, 133867, 267734, 535468, 669335, 937069, 1338670, 1874138, 2677340, 3748276, 4685345, 9370690, 18741380]

約数ペア:

[(1, 18741380), (2, 9370690), (4, 4685345), (5, 3748276), (7, 2677340), (10, 1874138), (14, 1338670), (20, 937069), (28, 669335), (35, 535468), (70, 267734), (140, 133867), (263, 71260), (509, 36820), (526, 35630), (1018, 18410), (1052, 17815), (1315, 14252), (1841, 10180), (2036, 9205), (2545, 7364), (2630, 7126), (3563, 5260), (3682, 5090)]