178338940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{2777}}^1$

素因数の和:2831

約数の個数: 72

約数和(自身を含む): 427034160

約数和(自身を除く): 248695220

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 169, 190, 247, 260, 338, 380, 494, 676, 845, 988, 1235, 1690, 2470, 2777, 3211, 3380, 4940, 5554, 6422, 11108, 12844, 13885, 16055, 27770, 32110, 36101, 52763, 55540, 64220, 72202, 105526, 144404, 180505, 211052, 263815, 361010, 469313, 527630, 685919, 722020, 938626, 1055260, 1371838, 1877252, 2346565, 2743676, 3429595, 4693130, 6859190, 8916947, 9386260, 13718380, 17833894, 35667788, 44584735, 89169470, 178338940]

約数ペア:

[(1, 178338940), (2, 89169470), (4, 44584735), (5, 35667788), (10, 17833894), (13, 13718380), (19, 9386260), (20, 8916947), (26, 6859190), (38, 4693130), (52, 3429595), (65, 2743676), (76, 2346565), (95, 1877252), (130, 1371838), (169, 1055260), (190, 938626), (247, 722020), (260, 685919), (338, 527630), (380, 469313), (494, 361010), (676, 263815), (845, 211052), (988, 180505), (1235, 144404), (1690, 105526), (2470, 72202), (2777, 64220), (3211, 55540), (3380, 52763), (4940, 36101), (5554, 32110), (6422, 27770), (11108, 16055), (12844, 13885)]