81754360

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{1103}}^1$

素因数の和:1240

約数の個数: 64

約数和(自身を含む): 196732800

約数和(自身を除く): 114978440

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 109, 136, 170, 218, 340, 436, 545, 680, 872, 1090, 1103, 1853, 2180, 2206, 3706, 4360, 4412, 5515, 7412, 8824, 9265, 11030, 14824, 18530, 18751, 22060, 37060, 37502, 44120, 74120, 75004, 93755, 120227, 150008, 187510, 240454, 375020, 480908, 601135, 750040, 961816, 1202270, 2043859, 2404540, 4087718, 4809080, 8175436, 10219295, 16350872, 20438590, 40877180, 81754360]

約数ペア:

[(1, 81754360), (2, 40877180), (4, 20438590), (5, 16350872), (8, 10219295), (10, 8175436), (17, 4809080), (20, 4087718), (34, 2404540), (40, 2043859), (68, 1202270), (85, 961816), (109, 750040), (136, 601135), (170, 480908), (218, 375020), (340, 240454), (436, 187510), (545, 150008), (680, 120227), (872, 93755), (1090, 75004), (1103, 74120), (1853, 44120), (2180, 37502), (2206, 37060), (3706, 22060), (4360, 18751), (4412, 18530), (5515, 14824), (7412, 11030), (8824, 9265)]