20319550

素因数分解:

$2^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{293}}^1$

素因数の和:397

約数の個数: 48

約数和(自身を含む): 40466160

約数和(自身を除く): 20146610

約数列:

[1, 2, 5, 10, 19, 25, 38, 50, 73, 95, 146, 190, 293, 365, 475, 586, 730, 950, 1387, 1465, 1825, 2774, 2930, 3650, 5567, 6935, 7325, 11134, 13870, 14650, 21389, 27835, 34675, 42778, 55670, 69350, 106945, 139175, 213890, 278350, 406391, 534725, 812782, 1069450, 2031955, 4063910, 10159775, 20319550]

約数ペア:

[(1, 20319550), (2, 10159775), (5, 4063910), (10, 2031955), (19, 1069450), (25, 812782), (38, 534725), (50, 406391), (73, 278350), (95, 213890), (146, 139175), (190, 106945), (293, 69350), (365, 55670), (475, 42778), (586, 34675), (730, 27835), (950, 21389), (1387, 14650), (1465, 13870), (1825, 11134), (2774, 7325), (2930, 6935), (3650, 5567)]