21818055

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{17}}^2\times {\mathrm{719}}^1$

素因数の和:768

約数の個数: 48

約数和(自身を含む): 42439680

約数和(自身を除く): 20621625

約数列:

[1, 3, 5, 7, 15, 17, 21, 35, 51, 85, 105, 119, 255, 289, 357, 595, 719, 867, 1445, 1785, 2023, 2157, 3595, 4335, 5033, 6069, 10115, 10785, 12223, 15099, 25165, 30345, 36669, 61115, 75495, 85561, 183345, 207791, 256683, 427805, 623373, 1038955, 1283415, 1454537, 3116865, 4363611, 7272685, 21818055]

約数ペア:

[(1, 21818055), (3, 7272685), (5, 4363611), (7, 3116865), (15, 1454537), (17, 1283415), (21, 1038955), (35, 623373), (51, 427805), (85, 256683), (105, 207791), (119, 183345), (255, 85561), (289, 75495), (357, 61115), (595, 36669), (719, 30345), (867, 25165), (1445, 15099), (1785, 12223), (2023, 10785), (2157, 10115), (3595, 6069), (4335, 5033)]