16621119

素因数分解:

$3^4\times {\mathrm{157}}^1\times {\mathrm{1307}}^1$

素因数の和:1476

約数の個数: 20

約数和(自身を含む): 25006344

約数和(自身を除く): 8385225

約数列:

[1, 3, 9, 27, 81, 157, 471, 1307, 1413, 3921, 4239, 11763, 12717, 35289, 105867, 205199, 615597, 1846791, 5540373, 16621119]

約数ペア:

[(1, 16621119), (3, 5540373), (9, 1846791), (27, 615597), (81, 205199), (157, 105867), (471, 35289), (1307, 12717), (1413, 11763), (3921, 4239)]