18720590

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{8627}}^1$

素因数の和:8672

約数の個数: 32

約数和(自身を含む): 39757824

約数和(自身を除く): 21037234

約数列:

[1, 2, 5, 7, 10, 14, 31, 35, 62, 70, 155, 217, 310, 434, 1085, 2170, 8627, 17254, 43135, 60389, 86270, 120778, 267437, 301945, 534874, 603890, 1337185, 1872059, 2674370, 3744118, 9360295, 18720590]

約数ペア:

[(1, 18720590), (2, 9360295), (5, 3744118), (7, 2674370), (10, 1872059), (14, 1337185), (31, 603890), (35, 534874), (62, 301945), (70, 267437), (155, 120778), (217, 86270), (310, 60389), (434, 43135), (1085, 17254), (2170, 8627)]