21725235

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{4057}}^1$

素因数の和:4092

約数の個数: 48

約数和(自身を含む): 45579456

約数和(自身を除く): 23854221

約数列:

[1, 3, 5, 7, 9, 15, 17, 21, 35, 45, 51, 63, 85, 105, 119, 153, 255, 315, 357, 595, 765, 1071, 1785, 4057, 5355, 12171, 20285, 28399, 36513, 60855, 68969, 85197, 141995, 182565, 206907, 255591, 344845, 425985, 482783, 620721, 1034535, 1277955, 1448349, 2413915, 3103605, 4345047, 7241745, 21725235]

約数ペア:

[(1, 21725235), (3, 7241745), (5, 4345047), (7, 3103605), (9, 2413915), (15, 1448349), (17, 1277955), (21, 1034535), (35, 620721), (45, 482783), (51, 425985), (63, 344845), (85, 255591), (105, 206907), (119, 182565), (153, 141995), (255, 85197), (315, 68969), (357, 60855), (595, 36513), (765, 28399), (1071, 20285), (1785, 12171), (4057, 5355)]