19566820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{827}}^1$

素因数の和:869

約数の個数: 72

約数和(自身を含む): 50912064

約数和(自身を除く): 31345244

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 169, 182, 260, 338, 364, 455, 676, 827, 845, 910, 1183, 1654, 1690, 1820, 2366, 3308, 3380, 4135, 4732, 5789, 5915, 8270, 10751, 11578, 11830, 16540, 21502, 23156, 23660, 28945, 43004, 53755, 57890, 75257, 107510, 115780, 139763, 150514, 215020, 279526, 301028, 376285, 559052, 698815, 752570, 978341, 1397630, 1505140, 1956682, 2795260, 3913364, 4891705, 9783410, 19566820]

約数ペア:

[(1, 19566820), (2, 9783410), (4, 4891705), (5, 3913364), (7, 2795260), (10, 1956682), (13, 1505140), (14, 1397630), (20, 978341), (26, 752570), (28, 698815), (35, 559052), (52, 376285), (65, 301028), (70, 279526), (91, 215020), (130, 150514), (140, 139763), (169, 115780), (182, 107510), (260, 75257), (338, 57890), (364, 53755), (455, 43004), (676, 28945), (827, 23660), (845, 23156), (910, 21502), (1183, 16540), (1654, 11830), (1690, 11578), (1820, 10751), (2366, 8270), (3308, 5915), (3380, 5789), (4135, 4732)]