81398880

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{56527}}^1$

素因数の和:56548

約数の個数: 72

約数和(自身を含む): 277778592

約数和(自身を除く): 196379712

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 72, 80, 90, 96, 120, 144, 160, 180, 240, 288, 360, 480, 720, 1440, 56527, 113054, 169581, 226108, 282635, 339162, 452216, 508743, 565270, 678324, 847905, 904432, 1017486, 1130540, 1356648, 1695810, 1808864, 2034972, 2261080, 2543715, 2713296, 3391620, 4069944, 4522160, 5087430, 5426592, 6783240, 8139888, 9044320, 10174860, 13566480, 16279776, 20349720, 27132960, 40699440, 81398880]

約数ペア:

[(1, 81398880), (2, 40699440), (3, 27132960), (4, 20349720), (5, 16279776), (6, 13566480), (8, 10174860), (9, 9044320), (10, 8139888), (12, 6783240), (15, 5426592), (16, 5087430), (18, 4522160), (20, 4069944), (24, 3391620), (30, 2713296), (32, 2543715), (36, 2261080), (40, 2034972), (45, 1808864), (48, 1695810), (60, 1356648), (72, 1130540), (80, 1017486), (90, 904432), (96, 847905), (120, 678324), (144, 565270), (160, 508743), (180, 452216), (240, 339162), (288, 282635), (360, 226108), (480, 169581), (720, 113054), (1440, 56527)]