20204847

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{149}}^1$

素因数の和:248

約数の個数: 48

約数和(自身を含む): 33852000

約数和(自身を除く): 13647153

約数列:

[1, 3, 9, 13, 19, 39, 57, 61, 117, 149, 171, 183, 247, 447, 549, 741, 793, 1159, 1341, 1937, 2223, 2379, 2831, 3477, 5811, 7137, 8493, 9089, 10431, 15067, 17433, 25479, 27267, 36803, 45201, 81801, 110409, 118157, 135603, 172691, 331227, 354471, 518073, 1063413, 1554219, 2244983, 6734949, 20204847]

約数ペア:

[(1, 20204847), (3, 6734949), (9, 2244983), (13, 1554219), (19, 1063413), (39, 518073), (57, 354471), (61, 331227), (117, 172691), (149, 135603), (171, 118157), (183, 110409), (247, 81801), (447, 45201), (549, 36803), (741, 27267), (793, 25479), (1159, 17433), (1341, 15067), (1937, 10431), (2223, 9089), (2379, 8493), (2831, 7137), (3477, 5811)]