18690628

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{23}}^2\times {\mathrm{73}}^1$

素因数の和:145

約数の個数: 54

約数和(自身を含む): 38098382

約数和(自身を除く): 19407754

約数列:

[1, 2, 4, 11, 22, 23, 44, 46, 73, 92, 121, 146, 242, 253, 292, 484, 506, 529, 803, 1012, 1058, 1606, 1679, 2116, 2783, 3212, 3358, 5566, 5819, 6716, 8833, 11132, 11638, 17666, 18469, 23276, 35332, 36938, 38617, 64009, 73876, 77234, 128018, 154468, 203159, 256036, 406318, 424787, 812636, 849574, 1699148, 4672657, 9345314, 18690628]

約数ペア:

[(1, 18690628), (2, 9345314), (4, 4672657), (11, 1699148), (22, 849574), (23, 812636), (44, 424787), (46, 406318), (73, 256036), (92, 203159), (121, 154468), (146, 128018), (242, 77234), (253, 73876), (292, 64009), (484, 38617), (506, 36938), (529, 35332), (803, 23276), (1012, 18469), (1058, 17666), (1606, 11638), (1679, 11132), (2116, 8833), (2783, 6716), (3212, 5819), (3358, 5566)]