138944728

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{607}}^1$

素因数の和:728

約数の個数: 64

約数和(自身を含む): 294174720

約数和(自身を除く): 155229992

約数列:

[1, 2, 4, 8, 13, 26, 31, 52, 62, 71, 104, 124, 142, 248, 284, 403, 568, 607, 806, 923, 1214, 1612, 1846, 2201, 2428, 3224, 3692, 4402, 4856, 7384, 7891, 8804, 15782, 17608, 18817, 28613, 31564, 37634, 43097, 57226, 63128, 75268, 86194, 114452, 150536, 172388, 228904, 244621, 344776, 489242, 560261, 978484, 1120522, 1336007, 1956968, 2241044, 2672014, 4482088, 5344028, 10688056, 17368091, 34736182, 69472364, 138944728]

約数ペア:

[(1, 138944728), (2, 69472364), (4, 34736182), (8, 17368091), (13, 10688056), (26, 5344028), (31, 4482088), (52, 2672014), (62, 2241044), (71, 1956968), (104, 1336007), (124, 1120522), (142, 978484), (248, 560261), (284, 489242), (403, 344776), (568, 244621), (607, 228904), (806, 172388), (923, 150536), (1214, 114452), (1612, 86194), (1846, 75268), (2201, 63128), (2428, 57226), (3224, 43097), (3692, 37634), (4402, 31564), (4856, 28613), (7384, 18817), (7891, 17608), (8804, 15782)]