20509940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{1759}}^1$

素因数の和:1832

約数の個数: 48

約数和(自身を含む): 47900160

約数和(自身を除く): 27390220

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 53, 55, 106, 110, 212, 220, 265, 530, 583, 1060, 1166, 1759, 2332, 2915, 3518, 5830, 7036, 8795, 11660, 17590, 19349, 35180, 38698, 77396, 93227, 96745, 186454, 193490, 372908, 386980, 466135, 932270, 1025497, 1864540, 2050994, 4101988, 5127485, 10254970, 20509940]

約数ペア:

[(1, 20509940), (2, 10254970), (4, 5127485), (5, 4101988), (10, 2050994), (11, 1864540), (20, 1025497), (22, 932270), (44, 466135), (53, 386980), (55, 372908), (106, 193490), (110, 186454), (212, 96745), (220, 93227), (265, 77396), (530, 38698), (583, 35180), (1060, 19349), (1166, 17590), (1759, 11660), (2332, 8795), (2915, 7036), (3518, 5830)]