21017151

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{15263}}^1$

素因数の和:15292

約数の個数: 20

約数和(自身を含む): 33244992

約数和(自身を除く): 12227841

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 1377, 15263, 45789, 137367, 259471, 412101, 778413, 1236303, 2335239, 7005717, 21017151]

約数ペア:

[(1, 21017151), (3, 7005717), (9, 2335239), (17, 1236303), (27, 778413), (51, 412101), (81, 259471), (153, 137367), (459, 45789), (1377, 15263)]