18280240

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{20773}}^1$

素因数の和:20797

約数の個数: 40

約数和(自身を含む): 46367568

約数和(自身を除く): 28087328

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 20773, 41546, 83092, 103865, 166184, 207730, 228503, 332368, 415460, 457006, 830920, 914012, 1142515, 1661840, 1828024, 2285030, 3656048, 4570060, 9140120, 18280240]

約数ペア:

[(1, 18280240), (2, 9140120), (4, 4570060), (5, 3656048), (8, 2285030), (10, 1828024), (11, 1661840), (16, 1142515), (20, 914012), (22, 830920), (40, 457006), (44, 415460), (55, 332368), (80, 228503), (88, 207730), (110, 166184), (176, 103865), (220, 83092), (440, 41546), (880, 20773)]