81317496

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{263}}^1\times {\mathrm{991}}^1$

素因数の和:1276

約数の個数: 64

約数和(自身を含む): 219985920

約数和(自身を除く): 138668424

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 156, 263, 312, 526, 789, 991, 1052, 1578, 1982, 2104, 2973, 3156, 3419, 3964, 5946, 6312, 6838, 7928, 10257, 11892, 12883, 13676, 20514, 23784, 25766, 27352, 38649, 41028, 51532, 77298, 82056, 103064, 154596, 260633, 309192, 521266, 781899, 1042532, 1563798, 2085064, 3127596, 3388229, 6255192, 6776458, 10164687, 13552916, 20329374, 27105832, 40658748, 81317496]

約数ペア:

[(1, 81317496), (2, 40658748), (3, 27105832), (4, 20329374), (6, 13552916), (8, 10164687), (12, 6776458), (13, 6255192), (24, 3388229), (26, 3127596), (39, 2085064), (52, 1563798), (78, 1042532), (104, 781899), (156, 521266), (263, 309192), (312, 260633), (526, 154596), (789, 103064), (991, 82056), (1052, 77298), (1578, 51532), (1982, 41028), (2104, 38649), (2973, 27352), (3156, 25766), (3419, 23784), (3964, 20514), (5946, 13676), (6312, 12883), (6838, 11892), (7928, 10257)]