399776728

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{25457}}^1$

素因数の和:25627

約数の個数: 32

約数和(自身を含む): 812619360

約数和(自身を除く): 412842632

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 151, 302, 604, 1208, 1963, 3926, 7852, 15704, 25457, 50914, 101828, 203656, 330941, 661882, 1323764, 2647528, 3844007, 7688014, 15376028, 30752056, 49972091, 99944182, 199888364, 399776728]

約数ペア:

[(1, 399776728), (2, 199888364), (4, 99944182), (8, 49972091), (13, 30752056), (26, 15376028), (52, 7688014), (104, 3844007), (151, 2647528), (302, 1323764), (604, 661882), (1208, 330941), (1963, 203656), (3926, 101828), (7852, 50914), (15704, 25457)]