21327519

素因数分解:

$3^1\times {\mathrm{19}}^2\times {\mathrm{47}}^1\times {\mathrm{419}}^1$

素因数の和:507

約数の個数: 24

約数和(自身を含む): 30723840

約数和(自身を除く): 9396321

約数列:

[1, 3, 19, 47, 57, 141, 361, 419, 893, 1083, 1257, 2679, 7961, 16967, 19693, 23883, 50901, 59079, 151259, 374167, 453777, 1122501, 7109173, 21327519]

約数ペア:

[(1, 21327519), (3, 7109173), (19, 1122501), (47, 453777), (57, 374167), (141, 151259), (361, 59079), (419, 50901), (893, 23883), (1083, 19693), (1257, 16967), (2679, 7961)]