78227240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{21491}}^1$

素因数の和:21522

約数の個数: 64

約数和(自身を含む): 216639360

約数和(自身を除く): 138412120

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 455, 520, 728, 910, 1820, 3640, 21491, 42982, 85964, 107455, 150437, 171928, 214910, 279383, 300874, 429820, 558766, 601748, 752185, 859640, 1117532, 1203496, 1396915, 1504370, 1955681, 2235064, 2793830, 3008740, 3911362, 5587660, 6017480, 7822724, 9778405, 11175320, 15645448, 19556810, 39113620, 78227240]

約数ペア:

[(1, 78227240), (2, 39113620), (4, 19556810), (5, 15645448), (7, 11175320), (8, 9778405), (10, 7822724), (13, 6017480), (14, 5587660), (20, 3911362), (26, 3008740), (28, 2793830), (35, 2235064), (40, 1955681), (52, 1504370), (56, 1396915), (65, 1203496), (70, 1117532), (91, 859640), (104, 752185), (130, 601748), (140, 558766), (182, 429820), (260, 300874), (280, 279383), (364, 214910), (455, 171928), (520, 150437), (728, 107455), (910, 85964), (1820, 42982), (3640, 21491)]