81723760

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{60091}}^1$

素因数の和:60121

約数の個数: 40

約数和(自身を含む): 201188016

約数和(自身を除く): 119464256

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 60091, 120182, 240364, 300455, 480728, 600910, 961456, 1021547, 1201820, 2043094, 2403640, 4086188, 4807280, 5107735, 8172376, 10215470, 16344752, 20430940, 40861880, 81723760]

約数ペア:

[(1, 81723760), (2, 40861880), (4, 20430940), (5, 16344752), (8, 10215470), (10, 8172376), (16, 5107735), (17, 4807280), (20, 4086188), (34, 2403640), (40, 2043094), (68, 1201820), (80, 1021547), (85, 961456), (136, 600910), (170, 480728), (272, 300455), (340, 240364), (680, 120182), (1360, 60091)]