19017575.000000000

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1013}}^1$

素因数の和:1090

約数の個数: 48

約数和(自身を含む): 232360128

約数和(自身を除く): 76636703

約数列:

[1, 5, 11, 13, 25, 43, 55, 65, 143, 215, 275, 325, 473, 559, 715, 1013, 1075, 2365, 2795, 3575, 5065, 6149, 11143, 11825, 13169, 13975, 25325, 30745, 43559, 55715, 65845, 144859, 153725, 217795, 278575, 329225, 479149, 566267, 724295, 1088975, 2395745, 2831335, 3621475, 6228937, 11978725, 14156675, 31144685, 155723425]

約数ペア:

[(1, 155723425), (5, 31144685), (11, 14156675), (13, 11978725), (25, 6228937), (43, 3621475), (55, 2831335), (65, 2395745), (143, 1088975), (215, 724295), (275, 566267), (325, 479149), (473, 329225), (559, 278575), (715, 217795), (1013, 153725), (1075, 144859), (2365, 65845), (2795, 55715), (3575, 43559), (5065, 30745), (6149, 25325), (11143, 13975), (11825, 13169)]