20640438

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{12601}}^1$

素因数の和:12629

約数の個数: 48

約数和(自身を含む): 55045536

約数和(自身を除く): 34405098

約数列:

[1, 2, 3, 6, 7, 9, 13, 14, 18, 21, 26, 39, 42, 63, 78, 91, 117, 126, 182, 234, 273, 546, 819, 1638, 12601, 25202, 37803, 75606, 88207, 113409, 163813, 176414, 226818, 264621, 327626, 491439, 529242, 793863, 982878, 1146691, 1474317, 1587726, 2293382, 2948634, 3440073, 6880146, 10320219, 20640438]

約数ペア:

[(1, 20640438), (2, 10320219), (3, 6880146), (6, 3440073), (7, 2948634), (9, 2293382), (13, 1587726), (14, 1474317), (18, 1146691), (21, 982878), (26, 793863), (39, 529242), (42, 491439), (63, 327626), (78, 264621), (91, 226818), (117, 176414), (126, 163813), (182, 113409), (234, 88207), (273, 75606), (546, 37803), (819, 25202), (1638, 12601)]