20281136

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{173}}^1\times {\mathrm{431}}^1$

素因数の和:629

約数の個数: 40

約数和(自身を含む): 41943744

約数和(自身を除く): 21662608

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 173, 272, 346, 431, 692, 862, 1384, 1724, 2768, 2941, 3448, 5882, 6896, 7327, 11764, 14654, 23528, 29308, 47056, 58616, 74563, 117232, 149126, 298252, 596504, 1193008, 1267571, 2535142, 5070284, 10140568, 20281136]

約数ペア:

[(1, 20281136), (2, 10140568), (4, 5070284), (8, 2535142), (16, 1267571), (17, 1193008), (34, 596504), (68, 298252), (136, 149126), (173, 117232), (272, 74563), (346, 58616), (431, 47056), (692, 29308), (862, 23528), (1384, 14654), (1724, 11764), (2768, 7327), (2941, 6896), (3448, 5882)]