31388409

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{367}}^1$

素因数の和:446

約数の個数: 48

約数和(自身を含む): 53044992

約数和(自身を除く): 21656583

約数列:

[1, 3, 9, 13, 17, 39, 43, 51, 117, 129, 153, 221, 367, 387, 559, 663, 731, 1101, 1677, 1989, 2193, 3303, 4771, 5031, 6239, 6579, 9503, 14313, 15781, 18717, 28509, 42939, 47343, 56151, 81107, 85527, 142029, 205153, 243321, 268277, 615459, 729963, 804831, 1846377, 2414493, 3487601, 10462803, 31388409]

約数ペア:

[(1, 31388409), (3, 10462803), (9, 3487601), (13, 2414493), (17, 1846377), (39, 804831), (43, 729963), (51, 615459), (117, 268277), (129, 243321), (153, 205153), (221, 142029), (367, 85527), (387, 81107), (559, 56151), (663, 47343), (731, 42939), (1101, 28509), (1677, 18717), (1989, 15781), (2193, 14313), (3303, 9503), (4771, 6579), (5031, 6239)]