28709631

素因数分解:

$3^2\times {\mathrm{71}}^1\times {\mathrm{179}}^1\times {\mathrm{251}}^1$

素因数の和:507

約数の個数: 24

約数和(自身を含む): 42456960

約数和(自身を除く): 13747329

約数列:

[1, 3, 9, 71, 179, 213, 251, 537, 639, 753, 1611, 2259, 12709, 17821, 38127, 44929, 53463, 114381, 134787, 160389, 404361, 3189959, 9569877, 28709631]

約数ペア:

[(1, 28709631), (3, 9569877), (9, 3189959), (71, 404361), (179, 160389), (213, 134787), (251, 114381), (537, 53463), (639, 44929), (753, 38127), (1611, 17821), (2259, 12709)]