20648004

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{1237}}^1$

素因数の和:1364

約数の個数: 48

約数和(自身を含む): 52411968

約数和(自身を除く): 31763964

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 107, 156, 214, 321, 428, 642, 1237, 1284, 1391, 2474, 2782, 3711, 4173, 4948, 5564, 7422, 8346, 14844, 16081, 16692, 32162, 48243, 64324, 96486, 132359, 192972, 264718, 397077, 529436, 794154, 1588308, 1720667, 3441334, 5162001, 6882668, 10324002, 20648004]

約数ペア:

[(1, 20648004), (2, 10324002), (3, 6882668), (4, 5162001), (6, 3441334), (12, 1720667), (13, 1588308), (26, 794154), (39, 529436), (52, 397077), (78, 264718), (107, 192972), (156, 132359), (214, 96486), (321, 64324), (428, 48243), (642, 32162), (1237, 16692), (1284, 16081), (1391, 14844), (2474, 8346), (2782, 7422), (3711, 5564), (4173, 4948)]