19716425

素因数分解:

$5^2\times {\mathrm{67}}^1\times {\mathrm{79}}^1\times {\mathrm{149}}^1$

素因数の和:305

約数の個数: 24

約数和(自身を含む): 25296000

約数和(自身を除く): 5579575

約数列:

[1, 5, 25, 67, 79, 149, 335, 395, 745, 1675, 1975, 3725, 5293, 9983, 11771, 26465, 49915, 58855, 132325, 249575, 294275, 788657, 3943285, 19716425]

約数ペア:

[(1, 19716425), (5, 3943285), (25, 788657), (67, 294275), (79, 249575), (149, 132325), (335, 58855), (395, 49915), (745, 26465), (1675, 11771), (1975, 9983), (3725, 5293)]