20366385

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{239}}^1$

素因数の和:302

約数の個数: 64

約数和(自身を含む): 38707200

約数和(自身を除く): 18340815

約数列:

[1, 3, 5, 13, 15, 19, 23, 39, 57, 65, 69, 95, 115, 195, 239, 247, 285, 299, 345, 437, 717, 741, 897, 1195, 1235, 1311, 1495, 2185, 3107, 3585, 3705, 4485, 4541, 5497, 5681, 6555, 9321, 13623, 15535, 16491, 17043, 22705, 27485, 28405, 46605, 59033, 68115, 71461, 82455, 85215, 104443, 177099, 214383, 295165, 313329, 357305, 522215, 885495, 1071915, 1357759, 1566645, 4073277, 6788795, 20366385]

約数ペア:

[(1, 20366385), (3, 6788795), (5, 4073277), (13, 1566645), (15, 1357759), (19, 1071915), (23, 885495), (39, 522215), (57, 357305), (65, 313329), (69, 295165), (95, 214383), (115, 177099), (195, 104443), (239, 85215), (247, 82455), (285, 71461), (299, 68115), (345, 59033), (437, 46605), (717, 28405), (741, 27485), (897, 22705), (1195, 17043), (1235, 16491), (1311, 15535), (1495, 13623), (2185, 9321), (3107, 6555), (3585, 5681), (3705, 5497), (4485, 4541)]