640947168

素因数分解:

$2^5\times 3^4\times {\mathrm{247279}}^1$

素因数の和:247301

約数の個数: 60

約数和(自身を含む): 1885015440

約数和(自身を除く): 1244068272

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 32, 36, 48, 54, 72, 81, 96, 108, 144, 162, 216, 288, 324, 432, 648, 864, 1296, 2592, 247279, 494558, 741837, 989116, 1483674, 1978232, 2225511, 2967348, 3956464, 4451022, 5934696, 6676533, 7912928, 8902044, 11869392, 13353066, 17804088, 20029599, 23738784, 26706132, 35608176, 40059198, 53412264, 71216352, 80118396, 106824528, 160236792, 213649056, 320473584, 640947168]

約数ペア:

[(1, 640947168), (2, 320473584), (3, 213649056), (4, 160236792), (6, 106824528), (8, 80118396), (9, 71216352), (12, 53412264), (16, 40059198), (18, 35608176), (24, 26706132), (27, 23738784), (32, 20029599), (36, 17804088), (48, 13353066), (54, 11869392), (72, 8902044), (81, 7912928), (96, 6676533), (108, 5934696), (144, 4451022), (162, 3956464), (216, 2967348), (288, 2225511), (324, 1978232), (432, 1483674), (648, 989116), (864, 741837), (1296, 494558), (2592, 247279)]