399336288

素因数分解:

$2^5\times 3^1\times {\mathrm{13}}^1\times {\mathrm{319981}}^1$

素因数の和:320007

約数の個数: 48

約数和(自身を含む): 1128896496

約数和(自身を除く): 729560208

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 32, 39, 48, 52, 78, 96, 104, 156, 208, 312, 416, 624, 1248, 319981, 639962, 959943, 1279924, 1919886, 2559848, 3839772, 4159753, 5119696, 7679544, 8319506, 10239392, 12479259, 15359088, 16639012, 24958518, 30718176, 33278024, 49917036, 66556048, 99834072, 133112096, 199668144, 399336288]

約数ペア:

[(1, 399336288), (2, 199668144), (3, 133112096), (4, 99834072), (6, 66556048), (8, 49917036), (12, 33278024), (13, 30718176), (16, 24958518), (24, 16639012), (26, 15359088), (32, 12479259), (39, 10239392), (48, 8319506), (52, 7679544), (78, 5119696), (96, 4159753), (104, 3839772), (156, 2559848), (208, 1919886), (312, 1279924), (416, 959943), (624, 639962), (1248, 319981)]