51107560

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{349}}^1\times {\mathrm{523}}^1$

素因数の和:890

約数の個数: 64

約数和(自身を含む): 132048000

約数和(自身を除く): 80940440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 349, 523, 698, 1046, 1396, 1745, 2092, 2443, 2615, 2792, 3490, 3661, 4184, 4886, 5230, 6980, 7322, 9772, 10460, 12215, 13960, 14644, 18305, 19544, 20920, 24430, 29288, 36610, 48860, 73220, 97720, 146440, 182527, 365054, 730108, 912635, 1277689, 1460216, 1825270, 2555378, 3650540, 5110756, 6388445, 7301080, 10221512, 12776890, 25553780, 51107560]

約数ペア:

[(1, 51107560), (2, 25553780), (4, 12776890), (5, 10221512), (7, 7301080), (8, 6388445), (10, 5110756), (14, 3650540), (20, 2555378), (28, 1825270), (35, 1460216), (40, 1277689), (56, 912635), (70, 730108), (140, 365054), (280, 182527), (349, 146440), (523, 97720), (698, 73220), (1046, 48860), (1396, 36610), (1745, 29288), (2092, 24430), (2443, 20920), (2615, 19544), (2792, 18305), (3490, 14644), (3661, 13960), (4184, 12215), (4886, 10460), (5230, 9772), (6980, 7322)]