20806578

素因数分解:

$2^1\times 3^3\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{277}}^1$

素因数の和:408

約数の個数: 64

約数和(自身を含む): 50440320

約数和(自身を除く): 29633742

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 27, 39, 54, 78, 107, 117, 214, 234, 277, 321, 351, 554, 642, 702, 831, 963, 1391, 1662, 1926, 2493, 2782, 2889, 3601, 4173, 4986, 5778, 7202, 7479, 8346, 10803, 12519, 14958, 21606, 25038, 29639, 32409, 37557, 59278, 64818, 75114, 88917, 97227, 177834, 194454, 266751, 385307, 533502, 770614, 800253, 1155921, 1600506, 2311842, 3467763, 6935526, 10403289, 20806578]

約数ペア:

[(1, 20806578), (2, 10403289), (3, 6935526), (6, 3467763), (9, 2311842), (13, 1600506), (18, 1155921), (26, 800253), (27, 770614), (39, 533502), (54, 385307), (78, 266751), (107, 194454), (117, 177834), (214, 97227), (234, 88917), (277, 75114), (321, 64818), (351, 59278), (554, 37557), (642, 32409), (702, 29639), (831, 25038), (963, 21606), (1391, 14958), (1662, 12519), (1926, 10803), (2493, 8346), (2782, 7479), (2889, 7202), (3601, 5778), (4173, 4986)]