20118820

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{1259}}^1$

素因数の和:1332

約数の個数: 48

約数和(自身を含む): 45722880

約数和(自身を除く): 25604060

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 47, 68, 85, 94, 170, 188, 235, 340, 470, 799, 940, 1259, 1598, 2518, 3196, 3995, 5036, 6295, 7990, 12590, 15980, 21403, 25180, 42806, 59173, 85612, 107015, 118346, 214030, 236692, 295865, 428060, 591730, 1005941, 1183460, 2011882, 4023764, 5029705, 10059410, 20118820]

約数ペア:

[(1, 20118820), (2, 10059410), (4, 5029705), (5, 4023764), (10, 2011882), (17, 1183460), (20, 1005941), (34, 591730), (47, 428060), (68, 295865), (85, 236692), (94, 214030), (170, 118346), (188, 107015), (235, 85612), (340, 59173), (470, 42806), (799, 25180), (940, 21403), (1259, 15980), (1598, 12590), (2518, 7990), (3196, 6295), (3995, 5036)]