20387510

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{269}}^1$

素因数の和:353

約数の個数: 64

約数和(自身を含む): 44089920

約数和(自身を除く): 23702410

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 53, 55, 65, 106, 110, 130, 143, 265, 269, 286, 530, 538, 583, 689, 715, 1166, 1345, 1378, 1430, 2690, 2915, 2959, 3445, 3497, 5830, 5918, 6890, 6994, 7579, 14257, 14795, 15158, 17485, 28514, 29590, 34970, 37895, 38467, 71285, 75790, 76934, 142570, 156827, 185341, 192335, 313654, 370682, 384670, 784135, 926705, 1568270, 1853410, 2038751, 4077502, 10193755, 20387510]

約数ペア:

[(1, 20387510), (2, 10193755), (5, 4077502), (10, 2038751), (11, 1853410), (13, 1568270), (22, 926705), (26, 784135), (53, 384670), (55, 370682), (65, 313654), (106, 192335), (110, 185341), (130, 156827), (143, 142570), (265, 76934), (269, 75790), (286, 71285), (530, 38467), (538, 37895), (583, 34970), (689, 29590), (715, 28514), (1166, 17485), (1345, 15158), (1378, 14795), (1430, 14257), (2690, 7579), (2915, 6994), (2959, 6890), (3445, 5918), (3497, 5830)]