21680295

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{2269}}^1$

素因数の和:2304

約数の個数: 48

約数和(自身を含む): 43475040

約数和(自身を除く): 21794745

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 49, 65, 91, 105, 147, 195, 245, 273, 455, 637, 735, 1365, 1911, 2269, 3185, 6807, 9555, 11345, 15883, 29497, 34035, 47649, 79415, 88491, 111181, 147485, 206479, 238245, 333543, 442455, 555905, 619437, 1032395, 1445353, 1667715, 3097185, 4336059, 7226765, 21680295]

約数ペア:

[(1, 21680295), (3, 7226765), (5, 4336059), (7, 3097185), (13, 1667715), (15, 1445353), (21, 1032395), (35, 619437), (39, 555905), (49, 442455), (65, 333543), (91, 238245), (105, 206479), (147, 147485), (195, 111181), (245, 88491), (273, 79415), (455, 47649), (637, 34035), (735, 29497), (1365, 15883), (1911, 11345), (2269, 9555), (3185, 6807)]