21067878

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^2\times {\mathrm{79}}^1\times {\mathrm{263}}^1$

素因数の和:373

約数の個数: 48

約数和(自身を含む): 46379520

約数和(自身を除く): 25311642

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 79, 158, 169, 237, 263, 338, 474, 507, 526, 789, 1014, 1027, 1578, 2054, 3081, 3419, 6162, 6838, 10257, 13351, 20514, 20777, 26702, 40053, 41554, 44447, 62331, 80106, 88894, 124662, 133341, 266682, 270101, 540202, 810303, 1620606, 3511313, 7022626, 10533939, 21067878]

約数ペア:

[(1, 21067878), (2, 10533939), (3, 7022626), (6, 3511313), (13, 1620606), (26, 810303), (39, 540202), (78, 270101), (79, 266682), (158, 133341), (169, 124662), (237, 88894), (263, 80106), (338, 62331), (474, 44447), (507, 41554), (526, 40053), (789, 26702), (1014, 20777), (1027, 20514), (1578, 13351), (2054, 10257), (3081, 6838), (3419, 6162)]