18780918

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{47}}^2\times {\mathrm{109}}^1$

素因数の和:221

約数の個数: 48

約数和(自身を含む): 41709360

約数和(自身を除く): 22928442

約数列:

[1, 2, 3, 6, 13, 26, 39, 47, 78, 94, 109, 141, 218, 282, 327, 611, 654, 1222, 1417, 1833, 2209, 2834, 3666, 4251, 4418, 5123, 6627, 8502, 10246, 13254, 15369, 28717, 30738, 57434, 66599, 86151, 133198, 172302, 199797, 240781, 399594, 481562, 722343, 1444686, 3130153, 6260306, 9390459, 18780918]

約数ペア:

[(1, 18780918), (2, 9390459), (3, 6260306), (6, 3130153), (13, 1444686), (26, 722343), (39, 481562), (47, 399594), (78, 240781), (94, 199797), (109, 172302), (141, 133198), (218, 86151), (282, 66599), (327, 57434), (611, 30738), (654, 28717), (1222, 15369), (1417, 13254), (1833, 10246), (2209, 8502), (2834, 6627), (3666, 5123), (4251, 4418)]