861660720

素因数分解:

$2^4\times 3^3\times 5^1\times {\mathrm{398917}}^1$

素因数の和:398939

約数の個数: 80

約数和(自身を含む): 2967949920

約数和(自身を除く): 2106289200

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 36, 40, 45, 48, 54, 60, 72, 80, 90, 108, 120, 135, 144, 180, 216, 240, 270, 360, 432, 540, 720, 1080, 2160, 398917, 797834, 1196751, 1595668, 1994585, 2393502, 3191336, 3590253, 3989170, 4787004, 5983755, 6382672, 7180506, 7978340, 9574008, 10770759, 11967510, 14361012, 15956680, 17951265, 19148016, 21541518, 23935020, 28722024, 31913360, 35902530, 43083036, 47870040, 53853795, 57444048, 71805060, 86166072, 95740080, 107707590, 143610120, 172332144, 215415180, 287220240, 430830360, 861660720]

約数ペア:

[(1, 861660720), (2, 430830360), (3, 287220240), (4, 215415180), (5, 172332144), (6, 143610120), (8, 107707590), (9, 95740080), (10, 86166072), (12, 71805060), (15, 57444048), (16, 53853795), (18, 47870040), (20, 43083036), (24, 35902530), (27, 31913360), (30, 28722024), (36, 23935020), (40, 21541518), (45, 19148016), (48, 17951265), (54, 15956680), (60, 14361012), (72, 11967510), (80, 10770759), (90, 9574008), (108, 7978340), (120, 7180506), (135, 6382672), (144, 5983755), (180, 4787004), (216, 3989170), (240, 3590253), (270, 3191336), (360, 2393502), (432, 1994585), (540, 1595668), (720, 1196751), (1080, 797834), (2160, 398917)]