28581903

素因数分解:

$3^7\times 7^1\times {\mathrm{1867}}^1$

素因数の和:1895

約数の個数: 32

約数和(自身を含む): 49016320

約数和(自身を除く): 20434417

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 567, 729, 1701, 1867, 2187, 5103, 5601, 13069, 15309, 16803, 39207, 50409, 117621, 151227, 352863, 453681, 1058589, 1361043, 3175767, 4083129, 9527301, 28581903]

約数ペア:

[(1, 28581903), (3, 9527301), (7, 4083129), (9, 3175767), (21, 1361043), (27, 1058589), (63, 453681), (81, 352863), (189, 151227), (243, 117621), (567, 50409), (729, 39207), (1701, 16803), (1867, 15309), (2187, 13069), (5103, 5601)]