19772440

素因数分解:

$2^3\times 5^1\times {\mathrm{181}}^1\times {\mathrm{2731}}^1$

素因数の和:2923

約数の個数: 32

約数和(自身を含む): 44750160

約数和(自身を除く): 24977720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 181, 362, 724, 905, 1448, 1810, 2731, 3620, 5462, 7240, 10924, 13655, 21848, 27310, 54620, 109240, 494311, 988622, 1977244, 2471555, 3954488, 4943110, 9886220, 19772440]

約数ペア:

[(1, 19772440), (2, 9886220), (4, 4943110), (5, 3954488), (8, 2471555), (10, 1977244), (20, 988622), (40, 494311), (181, 109240), (362, 54620), (724, 27310), (905, 21848), (1448, 13655), (1810, 10924), (2731, 7240), (3620, 5462)]