20507864

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{6361}}^1$

素因数の和:6411

約数の個数: 32

約数和(自身を含む): 42752640

約数和(自身を除く): 22244776

約数列:

[1, 2, 4, 8, 13, 26, 31, 52, 62, 104, 124, 248, 403, 806, 1612, 3224, 6361, 12722, 25444, 50888, 82693, 165386, 197191, 330772, 394382, 661544, 788764, 1577528, 2563483, 5126966, 10253932, 20507864]

約数ペア:

[(1, 20507864), (2, 10253932), (4, 5126966), (8, 2563483), (13, 1577528), (26, 788764), (31, 661544), (52, 394382), (62, 330772), (104, 197191), (124, 165386), (248, 82693), (403, 50888), (806, 25444), (1612, 12722), (3224, 6361)]