21215001

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{7919}}^1$

素因数の和:7988

約数の個数: 16

約数和(自身を含む): 30412800

約数和(自身を除く): 9197799

約数列:

[1, 3, 19, 47, 57, 141, 893, 2679, 7919, 23757, 150461, 372193, 451383, 1116579, 7071667, 21215001]

約数ペア:

[(1, 21215001), (3, 7071667), (19, 1116579), (47, 451383), (57, 372193), (141, 150461), (893, 23757), (2679, 7919)]