31981887

素因数分解:

$3^2\times 7^1\times {\mathrm{199}}^1\times {\mathrm{2551}}^1$

素因数の和:2763

約数の個数: 24

約数和(自身を含む): 53081600

約数和(自身を除く): 21099713

約数列:

[1, 3, 7, 9, 21, 63, 199, 597, 1393, 1791, 2551, 4179, 7653, 12537, 17857, 22959, 53571, 160713, 507649, 1522947, 3553543, 4568841, 10660629, 31981887]

約数ペア:

[(1, 31981887), (3, 10660629), (7, 4568841), (9, 3553543), (21, 1522947), (63, 507649), (199, 160713), (597, 53571), (1393, 22959), (1791, 17857), (2551, 12537), (4179, 7653)]