12120921

素因数分解:

$3^4\times {\mathrm{151}}^1\times {\mathrm{991}}^1$

素因数の和:1154

約数の個数: 20

約数和(自身を含む): 18244864

約数和(自身を除く): 6123943

約数列:

[1, 3, 9, 27, 81, 151, 453, 991, 1359, 2973, 4077, 8919, 12231, 26757, 80271, 149641, 448923, 1346769, 4040307, 12120921]

約数ペア:

[(1, 12120921), (3, 4040307), (9, 1346769), (27, 448923), (81, 149641), (151, 80271), (453, 26757), (991, 12231), (1359, 8919), (2973, 4077)]