20873229

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1657}}^1$

素因数の和:1709

約数の個数: 32

約数和(自身を含む): 33425280

約数和(自身を除く): 12552051

約数列:

[1, 3, 13, 17, 19, 39, 51, 57, 221, 247, 323, 663, 741, 969, 1657, 4199, 4971, 12597, 21541, 28169, 31483, 64623, 84507, 94449, 366197, 409279, 535211, 1098591, 1227837, 1605633, 6957743, 20873229]

約数ペア:

[(1, 20873229), (3, 6957743), (13, 1605633), (17, 1227837), (19, 1098591), (39, 535211), (51, 409279), (57, 366197), (221, 94449), (247, 84507), (323, 64623), (663, 31483), (741, 28169), (969, 21541), (1657, 12597), (4199, 4971)]