259718875936

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{649661}}^1$

素因数の和:649746

約数の個数: 72

約数和(自身を含む): 568990870812

約数和(自身を除く): 309271994876

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 32, 52, 62, 104, 124, 208, 248, 403, 416, 496, 806, 961, 992, 1612, 1922, 3224, 3844, 6448, 7688, 12493, 12896, 15376, 24986, 30752, 49972, 99944, 199888, 399776, 649661, 1299322, 2598644, 5197288, 8445593, 10394576, 16891186, 20139491, 20789152, 33782372, 40278982, 67564744, 80557964, 135129488, 161115928, 261813383, 270258976, 322231856, 523626766, 624324221, 644463712, 1047253532, 1248648442, 2094507064, 2497296884, 4189014128, 4994593768, 8116214873, 8378028256, 9989187536, 16232429746, 19978375072, 32464859492, 64929718984, 129859437968, 259718875936]

約数ペア:

[(1, 259718875936), (2, 129859437968), (4, 64929718984), (8, 32464859492), (13, 19978375072), (16, 16232429746), (26, 9989187536), (31, 8378028256), (32, 8116214873), (52, 4994593768), (62, 4189014128), (104, 2497296884), (124, 2094507064), (208, 1248648442), (248, 1047253532), (403, 644463712), (416, 624324221), (496, 523626766), (806, 322231856), (961, 270258976), (992, 261813383), (1612, 161115928), (1922, 135129488), (3224, 80557964), (3844, 67564744), (6448, 40278982), (7688, 33782372), (12493, 20789152), (12896, 20139491), (15376, 16891186), (24986, 10394576), (30752, 8445593), (49972, 5197288), (99944, 2598644), (199888, 1299322), (399776, 649661)]