18219460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{181}}^1\times {\mathrm{719}}^1$

素因数の和:916

約数の個数: 48

約数和(自身を含む): 44029440

約数和(自身を除く): 25809980

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 181, 362, 719, 724, 905, 1267, 1438, 1810, 2534, 2876, 3595, 3620, 5033, 5068, 6335, 7190, 10066, 12670, 14380, 20132, 25165, 25340, 50330, 100660, 130139, 260278, 520556, 650695, 910973, 1301390, 1821946, 2602780, 3643892, 4554865, 9109730, 18219460]

約数ペア:

[(1, 18219460), (2, 9109730), (4, 4554865), (5, 3643892), (7, 2602780), (10, 1821946), (14, 1301390), (20, 910973), (28, 650695), (35, 520556), (70, 260278), (140, 130139), (181, 100660), (362, 50330), (719, 25340), (724, 25165), (905, 20132), (1267, 14380), (1438, 12670), (1810, 10066), (2534, 7190), (2876, 6335), (3595, 5068), (3620, 5033)]