15991515

素因数分解:

$3^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{7561}}^1$

素因数の和:7619

約数の個数: 24

約数和(自身を含む): 28312128

約数和(自身を除く): 12320613

約数列:

[1, 3, 5, 9, 15, 45, 47, 141, 235, 423, 705, 2115, 7561, 22683, 37805, 68049, 113415, 340245, 355367, 1066101, 1776835, 3198303, 5330505, 15991515]

約数ペア:

[(1, 15991515), (3, 5330505), (5, 3198303), (9, 1776835), (15, 1066101), (45, 355367), (47, 340245), (141, 113415), (235, 68049), (423, 37805), (705, 22683), (2115, 7561)]