127987990

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{51817}}^1$

素因数の和:51856

約数の個数: 32

約数和(自身を含む): 261162720

約数和(自身を除く): 133174730

約数列:

[1, 2, 5, 10, 13, 19, 26, 38, 65, 95, 130, 190, 247, 494, 1235, 2470, 51817, 103634, 259085, 518170, 673621, 984523, 1347242, 1969046, 3368105, 4922615, 6736210, 9845230, 12798799, 25597598, 63993995, 127987990]

約数ペア:

[(1, 127987990), (2, 63993995), (5, 25597598), (10, 12798799), (13, 9845230), (19, 6736210), (26, 4922615), (38, 3368105), (65, 1969046), (95, 1347242), (130, 984523), (190, 673621), (247, 518170), (494, 259085), (1235, 103634), (2470, 51817)]