21661035

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^2\times {\mathrm{71}}^1$

素因数の和:176

約数の個数: 48

約数和(自身を含む): 39253248

約数和(自身を除く): 17592213

約数列:

[1, 3, 5, 11, 15, 33, 43, 55, 71, 129, 165, 213, 215, 355, 473, 645, 781, 1065, 1419, 1849, 2343, 2365, 3053, 3905, 5547, 7095, 9159, 9245, 11715, 15265, 20339, 27735, 33583, 45795, 61017, 100749, 101695, 131279, 167915, 305085, 393837, 503745, 656395, 1444069, 1969185, 4332207, 7220345, 21661035]

約数ペア:

[(1, 21661035), (3, 7220345), (5, 4332207), (11, 1969185), (15, 1444069), (33, 656395), (43, 503745), (55, 393837), (71, 305085), (129, 167915), (165, 131279), (213, 101695), (215, 100749), (355, 61017), (473, 45795), (645, 33583), (781, 27735), (1065, 20339), (1419, 15265), (1849, 11715), (2343, 9245), (2365, 9159), (3053, 7095), (3905, 5547)]