820901954

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{173}}^1\times {\mathrm{193}}^1\times {\mathrm{647}}^1$

素因数の和:1034

約数の個数: 32

約数和(自身を含む): 1312433280

約数和(自身を除く): 491531326

約数列:

[1, 2, 19, 38, 173, 193, 346, 386, 647, 1294, 3287, 3667, 6574, 7334, 12293, 24586, 33389, 66778, 111931, 124871, 223862, 249742, 634391, 1268782, 2126689, 2372549, 4253378, 4745098, 21602683, 43205366, 410450977, 820901954]

約数ペア:

[(1, 820901954), (2, 410450977), (19, 43205366), (38, 21602683), (173, 4745098), (193, 4253378), (346, 2372549), (386, 2126689), (647, 1268782), (1294, 634391), (3287, 249742), (3667, 223862), (6574, 124871), (7334, 111931), (12293, 66778), (24586, 33389)]