21718060

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{11933}}^1$

素因数の和:11962

約数の個数: 48

約数和(自身を含む): 56137536

約数和(自身を除く): 34419476

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 11933, 23866, 47732, 59665, 83531, 119330, 155129, 167062, 238660, 310258, 334124, 417655, 620516, 775645, 835310, 1085903, 1551290, 1670620, 2171806, 3102580, 4343612, 5429515, 10859030, 21718060]

約数ペア:

[(1, 21718060), (2, 10859030), (4, 5429515), (5, 4343612), (7, 3102580), (10, 2171806), (13, 1670620), (14, 1551290), (20, 1085903), (26, 835310), (28, 775645), (35, 620516), (52, 417655), (65, 334124), (70, 310258), (91, 238660), (130, 167062), (140, 155129), (182, 119330), (260, 83531), (364, 59665), (455, 47732), (910, 23866), (1820, 11933)]