129284920

素因数分解:

$2^3\times 5^1\times {\mathrm{919}}^1\times {\mathrm{3517}}^1$

素因数の和:4447

約数の個数: 32

約数和(自身を含む): 291290400

約数和(自身を除く): 162005480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 919, 1838, 3517, 3676, 4595, 7034, 7352, 9190, 14068, 17585, 18380, 28136, 35170, 36760, 70340, 140680, 3232123, 6464246, 12928492, 16160615, 25856984, 32321230, 64642460, 129284920]

約数ペア:

[(1, 129284920), (2, 64642460), (4, 32321230), (5, 25856984), (8, 16160615), (10, 12928492), (20, 6464246), (40, 3232123), (919, 140680), (1838, 70340), (3517, 36760), (3676, 35170), (4595, 28136), (7034, 18380), (7352, 17585), (9190, 14068)]