19704575

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{907}}^1$

素因数の和:1007

約数の個数: 24

約数和(自身を含む): 27022080

約数和(自身を除く): 7317505

約数列:

[1, 5, 11, 25, 55, 79, 275, 395, 869, 907, 1975, 4345, 4535, 9977, 21725, 22675, 49885, 71653, 249425, 358265, 788183, 1791325, 3940915, 19704575]

約数ペア:

[(1, 19704575), (5, 3940915), (11, 1791325), (25, 788183), (55, 358265), (79, 249425), (275, 71653), (395, 49885), (869, 22675), (907, 21725), (1975, 9977), (4345, 4535)]