21031065

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{42487}}^1$

素因数の和:42509

約数の個数: 24

約数和(自身を含む): 39768768

約数和(自身を除く): 18737703

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 165, 495, 42487, 127461, 212435, 382383, 467357, 637305, 1402071, 1911915, 2336785, 4206213, 7010355, 21031065]

約数ペア:

[(1, 21031065), (3, 7010355), (5, 4206213), (9, 2336785), (11, 1911915), (15, 1402071), (33, 637305), (45, 467357), (55, 382383), (99, 212435), (165, 127461), (495, 42487)]