20736691941

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{51971659}}^1$

素因数の和:51971688

約数の個数: 16

約数和(自身を含む): 33261862400

約数和(自身を除く): 12525170459

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 51971659, 155914977, 363801613, 987461521, 1091404839, 2962384563, 6912230647, 20736691941]

約数ペア:

[(1, 20736691941), (3, 6912230647), (7, 2962384563), (19, 1091404839), (21, 987461521), (57, 363801613), (133, 155914977), (399, 51971659)]