1284076180

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{907}}^1\times {\mathrm{997}}^1$

素因数の和:1984

約数の個数: 48

約数和(自身を含む): 2740300416

約数和(自身を除く): 1456224236

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 907, 997, 1420, 1814, 1994, 3628, 3988, 4535, 4985, 9070, 9970, 18140, 19940, 64397, 70787, 128794, 141574, 257588, 283148, 321985, 353935, 643970, 707870, 904279, 1287940, 1415740, 1808558, 3617116, 4521395, 9042790, 18085580, 64203809, 128407618, 256815236, 321019045, 642038090, 1284076180]

約数ペア:

[(1, 1284076180), (2, 642038090), (4, 321019045), (5, 256815236), (10, 128407618), (20, 64203809), (71, 18085580), (142, 9042790), (284, 4521395), (355, 3617116), (710, 1808558), (907, 1415740), (997, 1287940), (1420, 904279), (1814, 707870), (1994, 643970), (3628, 353935), (3988, 321985), (4535, 283148), (4985, 257588), (9070, 141574), (9970, 128794), (18140, 70787), (19940, 64397)]