15720237

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{14929}}^1$

素因数の和:14954

約数の個数: 20

約数和(自身を含む): 25291420

約数和(自身を除く): 9571183

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 14929, 44787, 134361, 194077, 403083, 582231, 1209249, 1746693, 5240079, 15720237]

約数ペア:

[(1, 15720237), (3, 5240079), (9, 1746693), (13, 1209249), (27, 582231), (39, 403083), (81, 194077), (117, 134361), (351, 44787), (1053, 14929)]