21647560

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{49199}}^1$

素因数の和:49221

約数の個数: 32

約数和(自身を含む): 53136000

約数和(自身を除く): 31488440

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 49199, 98398, 196796, 245995, 393592, 491990, 541189, 983980, 1082378, 1967960, 2164756, 2705945, 4329512, 5411890, 10823780, 21647560]

約数ペア:

[(1, 21647560), (2, 10823780), (4, 5411890), (5, 4329512), (8, 2705945), (10, 2164756), (11, 1967960), (20, 1082378), (22, 983980), (40, 541189), (44, 491990), (55, 393592), (88, 245995), (110, 196796), (220, 98398), (440, 49199)]