21380616

素因数分解:

$2^3\times 3^2\times {\mathrm{23}}^1\times {\mathrm{12911}}^1$

素因数の和:12946

約数の個数: 48

約数和(自身を含む): 60428160

約数和(自身を除く): 39047544

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 23, 24, 36, 46, 69, 72, 92, 138, 184, 207, 276, 414, 552, 828, 1656, 12911, 25822, 38733, 51644, 77466, 103288, 116199, 154932, 232398, 296953, 309864, 464796, 593906, 890859, 929592, 1187812, 1781718, 2375624, 2672577, 3563436, 5345154, 7126872, 10690308, 21380616]

約数ペア:

[(1, 21380616), (2, 10690308), (3, 7126872), (4, 5345154), (6, 3563436), (8, 2672577), (9, 2375624), (12, 1781718), (18, 1187812), (23, 929592), (24, 890859), (36, 593906), (46, 464796), (69, 309864), (72, 296953), (92, 232398), (138, 154932), (184, 116199), (207, 103288), (276, 77466), (414, 51644), (552, 38733), (828, 25822), (1656, 12911)]