21916986

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{293}}^1$

素因数の和:455

約数の個数: 64

約数和(自身を含む): 54528768

約数和(自身を除く): 32611782

約数列:

[1, 2, 3, 6, 7, 13, 14, 21, 26, 39, 42, 78, 91, 137, 182, 273, 274, 293, 411, 546, 586, 822, 879, 959, 1758, 1781, 1918, 2051, 2877, 3562, 3809, 4102, 5343, 5754, 6153, 7618, 10686, 11427, 12306, 12467, 22854, 24934, 26663, 37401, 40141, 53326, 74802, 79989, 80282, 120423, 159978, 240846, 280987, 521833, 561974, 842961, 1043666, 1565499, 1685922, 3130998, 3652831, 7305662, 10958493, 21916986]

約数ペア:

[(1, 21916986), (2, 10958493), (3, 7305662), (6, 3652831), (7, 3130998), (13, 1685922), (14, 1565499), (21, 1043666), (26, 842961), (39, 561974), (42, 521833), (78, 280987), (91, 240846), (137, 159978), (182, 120423), (273, 80282), (274, 79989), (293, 74802), (411, 53326), (546, 40141), (586, 37401), (822, 26663), (879, 24934), (959, 22854), (1758, 12467), (1781, 12306), (1918, 11427), (2051, 10686), (2877, 7618), (3562, 6153), (3809, 5754), (4102, 5343)]