20957580

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{16633}}^1$

素因数の和:16655

約数の個数: 72

約数和(自身を含む): 72657312

約数和(自身を除く): 51699732

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 16633, 33266, 49899, 66532, 83165, 99798, 116431, 149697, 166330, 199596, 232862, 249495, 299394, 332660, 349293, 465724, 498990, 582155, 598788, 698586, 748485, 997980, 1047879, 1164310, 1397172, 1496970, 1746465, 2095758, 2328620, 2993940, 3492930, 4191516, 5239395, 6985860, 10478790, 20957580]

約数ペア:

[(1, 20957580), (2, 10478790), (3, 6985860), (4, 5239395), (5, 4191516), (6, 3492930), (7, 2993940), (9, 2328620), (10, 2095758), (12, 1746465), (14, 1496970), (15, 1397172), (18, 1164310), (20, 1047879), (21, 997980), (28, 748485), (30, 698586), (35, 598788), (36, 582155), (42, 498990), (45, 465724), (60, 349293), (63, 332660), (70, 299394), (84, 249495), (90, 232862), (105, 199596), (126, 166330), (140, 149697), (180, 116431), (210, 99798), (252, 83165), (315, 66532), (420, 49899), (630, 33266), (1260, 16633)]