20507865

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{11489}}^1$

素因数の和:11521

約数の個数: 32

約数和(自身を含む): 39709440

約数和(自身を除く): 19201575

約数列:

[1, 3, 5, 7, 15, 17, 21, 35, 51, 85, 105, 119, 255, 357, 595, 1785, 11489, 34467, 57445, 80423, 172335, 195313, 241269, 402115, 585939, 976565, 1206345, 1367191, 2929695, 4101573, 6835955, 20507865]

約数ペア:

[(1, 20507865), (3, 6835955), (5, 4101573), (7, 2929695), (15, 1367191), (17, 1206345), (21, 976565), (35, 585939), (51, 402115), (85, 241269), (105, 195313), (119, 172335), (255, 80423), (357, 57445), (595, 34467), (1785, 11489)]