1408180

素因数分解:

$2^2\times 5^1\times {\mathrm{181}}^1\times {\mathrm{389}}^1$

素因数の和:579

約数の個数: 24

約数和(自身を含む): 2981160

約数和(自身を除く): 1572980

約数列:

[1, 2, 4, 5, 10, 20, 181, 362, 389, 724, 778, 905, 1556, 1810, 1945, 3620, 3890, 7780, 70409, 140818, 281636, 352045, 704090, 1408180]

約数ペア:

[(1, 1408180), (2, 704090), (4, 352045), (5, 281636), (10, 140818), (20, 70409), (181, 7780), (362, 3890), (389, 3620), (724, 1945), (778, 1810), (905, 1556)]