28385890

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{3259}}^1$

素因数の和:3346

約数の個数: 32

約数和(自身を含む): 55863360

約数和(自身を除く): 27477470

約数列:

[1, 2, 5, 10, 13, 26, 65, 67, 130, 134, 335, 670, 871, 1742, 3259, 4355, 6518, 8710, 16295, 32590, 42367, 84734, 211835, 218353, 423670, 436706, 1091765, 2183530, 2838589, 5677178, 14192945, 28385890]

約数ペア:

[(1, 28385890), (2, 14192945), (5, 5677178), (10, 2838589), (13, 2183530), (26, 1091765), (65, 436706), (67, 423670), (130, 218353), (134, 211835), (335, 84734), (670, 42367), (871, 32590), (1742, 16295), (3259, 8710), (4355, 6518)]