21685761

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{3457}}^1$

素因数の和:3521

約数の個数: 24

約数和(自身を含む): 33985224

約数和(自身を除く): 12299463

約数列:

[1, 3, 9, 17, 41, 51, 123, 153, 369, 697, 2091, 3457, 6273, 10371, 31113, 58769, 141737, 176307, 425211, 528921, 1275633, 2409529, 7228587, 21685761]

約数ペア:

[(1, 21685761), (3, 7228587), (9, 2409529), (17, 1275633), (41, 528921), (51, 425211), (123, 176307), (153, 141737), (369, 58769), (697, 31113), (2091, 10371), (3457, 6273)]