18640818

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{337}}^1\times {\mathrm{439}}^1$

素因数の和:791

約数の個数: 48

約数和(自身を含む): 46400640

約数和(自身を除く): 27759822

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 337, 439, 674, 878, 1011, 1317, 2022, 2359, 2634, 3033, 3073, 3951, 4718, 6066, 6146, 7077, 7902, 9219, 14154, 18438, 21231, 27657, 42462, 55314, 147943, 295886, 443829, 887658, 1035601, 1331487, 2071202, 2662974, 3106803, 6213606, 9320409, 18640818]

約数ペア:

[(1, 18640818), (2, 9320409), (3, 6213606), (6, 3106803), (7, 2662974), (9, 2071202), (14, 1331487), (18, 1035601), (21, 887658), (42, 443829), (63, 295886), (126, 147943), (337, 55314), (439, 42462), (674, 27657), (878, 21231), (1011, 18438), (1317, 14154), (2022, 9219), (2359, 7902), (2634, 7077), (3033, 6146), (3073, 6066), (3951, 4718)]