21862540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{8219}}^1$

素因数の和:8254

約数の個数: 48

約数和(自身を含む): 55238400

約数和(自身を除く): 33375860

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 76, 95, 133, 140, 190, 266, 380, 532, 665, 1330, 2660, 8219, 16438, 32876, 41095, 57533, 82190, 115066, 156161, 164380, 230132, 287665, 312322, 575330, 624644, 780805, 1093127, 1150660, 1561610, 2186254, 3123220, 4372508, 5465635, 10931270, 21862540]

約数ペア:

[(1, 21862540), (2, 10931270), (4, 5465635), (5, 4372508), (7, 3123220), (10, 2186254), (14, 1561610), (19, 1150660), (20, 1093127), (28, 780805), (35, 624644), (38, 575330), (70, 312322), (76, 287665), (95, 230132), (133, 164380), (140, 156161), (190, 115066), (266, 82190), (380, 57533), (532, 41095), (665, 32876), (1330, 16438), (2660, 8219)]