81977427

素因数分解:

$3^4\times 7^1\times {\mathrm{163}}^1\times {\mathrm{887}}^1$

素因数の和:1069

約数の個数: 40

約数和(自身を含む): 140971776

約数和(自身を除く): 58994349

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 163, 189, 489, 567, 887, 1141, 1467, 2661, 3423, 4401, 6209, 7983, 10269, 13203, 18627, 23949, 30807, 55881, 71847, 92421, 144581, 167643, 433743, 502929, 1012067, 1301229, 3036201, 3903687, 9108603, 11711061, 27325809, 81977427]

約数ペア:

[(1, 81977427), (3, 27325809), (7, 11711061), (9, 9108603), (21, 3903687), (27, 3036201), (63, 1301229), (81, 1012067), (163, 502929), (189, 433743), (489, 167643), (567, 144581), (887, 92421), (1141, 71847), (1467, 55881), (2661, 30807), (3423, 23949), (4401, 18627), (6209, 13203), (7983, 10269)]