21077360

素因数分解:

$2^4\times 5^1\times {\mathrm{487}}^1\times {\mathrm{541}}^1$

素因数の和:1041

約数の個数: 40

約数和(自身を含む): 49196256

約数和(自身を除く): 28118896

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 487, 541, 974, 1082, 1948, 2164, 2435, 2705, 3896, 4328, 4870, 5410, 7792, 8656, 9740, 10820, 19480, 21640, 38960, 43280, 263467, 526934, 1053868, 1317335, 2107736, 2634670, 4215472, 5269340, 10538680, 21077360]

約数ペア:

[(1, 21077360), (2, 10538680), (4, 5269340), (5, 4215472), (8, 2634670), (10, 2107736), (16, 1317335), (20, 1053868), (40, 526934), (80, 263467), (487, 43280), (541, 38960), (974, 21640), (1082, 19480), (1948, 10820), (2164, 9740), (2435, 8656), (2705, 7792), (3896, 5410), (4328, 4870)]