447920

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{509}}^1$

素因数の和:533

約数の個数: 40

約数和(自身を含む): 1138320

約数和(自身を除く): 690400

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 509, 880, 1018, 2036, 2545, 4072, 5090, 5599, 8144, 10180, 11198, 20360, 22396, 27995, 40720, 44792, 55990, 89584, 111980, 223960, 447920]

約数ペア:

[(1, 447920), (2, 223960), (4, 111980), (5, 89584), (8, 55990), (10, 44792), (11, 40720), (16, 27995), (20, 22396), (22, 20360), (40, 11198), (44, 10180), (55, 8144), (80, 5599), (88, 5090), (110, 4072), (176, 2545), (220, 2036), (440, 1018), (509, 880)]