20357260

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13219}}^1$

素因数の和:13246

約数の個数: 48

約数和(自身を含む): 53303040

約数和(自身を除く): 32945780

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 13219, 26438, 52876, 66095, 92533, 132190, 145409, 185066, 264380, 290818, 370132, 462665, 581636, 727045, 925330, 1017863, 1454090, 1850660, 2035726, 2908180, 4071452, 5089315, 10178630, 20357260]

約数ペア:

[(1, 20357260), (2, 10178630), (4, 5089315), (5, 4071452), (7, 2908180), (10, 2035726), (11, 1850660), (14, 1454090), (20, 1017863), (22, 925330), (28, 727045), (35, 581636), (44, 462665), (55, 370132), (70, 290818), (77, 264380), (110, 185066), (140, 145409), (154, 132190), (220, 92533), (308, 66095), (385, 52876), (770, 26438), (1540, 13219)]