489071780

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{31391}}^1$

素因数の和:31460

約数の個数: 48

約数和(自身を含む): 1107509760

約数和(自身を除く): 618437980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 41, 76, 82, 95, 164, 190, 205, 380, 410, 779, 820, 1558, 3116, 3895, 7790, 15580, 31391, 62782, 125564, 156955, 313910, 596429, 627820, 1192858, 1287031, 2385716, 2574062, 2982145, 5148124, 5964290, 6435155, 11928580, 12870310, 24453589, 25740620, 48907178, 97814356, 122267945, 244535890, 489071780]

約数ペア:

[(1, 489071780), (2, 244535890), (4, 122267945), (5, 97814356), (10, 48907178), (19, 25740620), (20, 24453589), (38, 12870310), (41, 11928580), (76, 6435155), (82, 5964290), (95, 5148124), (164, 2982145), (190, 2574062), (205, 2385716), (380, 1287031), (410, 1192858), (779, 627820), (820, 596429), (1558, 313910), (3116, 156955), (3895, 125564), (7790, 62782), (15580, 31391)]