21680828

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{293}}^1\times {\mathrm{1423}}^1$

素因数の和:1733

約数の個数: 24

約数和(自身を含む): 41028288

約数和(自身を除く): 19347460

約数列:

[1, 2, 4, 13, 26, 52, 293, 586, 1172, 1423, 2846, 3809, 5692, 7618, 15236, 18499, 36998, 73996, 416939, 833878, 1667756, 5420207, 10840414, 21680828]

約数ペア:

[(1, 21680828), (2, 10840414), (4, 5420207), (13, 1667756), (26, 833878), (52, 416939), (293, 73996), (586, 36998), (1172, 18499), (1423, 15236), (2846, 7618), (3809, 5692)]