213198561

素因数分解:

$3^4\times {\mathrm{151}}^1\times {\mathrm{17431}}^1$

素因数の和:17594

約数の個数: 20

約数和(自身を含む): 320609344

約数和(自身を除く): 107410783

約数列:

[1, 3, 9, 27, 81, 151, 453, 1359, 4077, 12231, 17431, 52293, 156879, 470637, 1411911, 2632081, 7896243, 23688729, 71066187, 213198561]

約数ペア:

[(1, 213198561), (3, 71066187), (9, 23688729), (27, 7896243), (81, 2632081), (151, 1411911), (453, 470637), (1359, 156879), (4077, 52293), (12231, 17431)]