21423051

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{419}}^1$

素因数の和:480

約数の個数: 48

約数和(自身を含む): 36691200

約数和(自身を除く): 15268149

約数列:

[1, 3, 9, 13, 19, 23, 39, 57, 69, 117, 171, 207, 247, 299, 419, 437, 741, 897, 1257, 1311, 2223, 2691, 3771, 3933, 5447, 5681, 7961, 9637, 16341, 17043, 23883, 28911, 49023, 51129, 71649, 86733, 103493, 125281, 183103, 310479, 375843, 549309, 931437, 1127529, 1647927, 2380339, 7141017, 21423051]

約数ペア:

[(1, 21423051), (3, 7141017), (9, 2380339), (13, 1647927), (19, 1127529), (23, 931437), (39, 549309), (57, 375843), (69, 310479), (117, 183103), (171, 125281), (207, 103493), (247, 86733), (299, 71649), (419, 51129), (437, 49023), (741, 28911), (897, 23883), (1257, 17043), (1311, 16341), (2223, 9637), (2691, 7961), (3771, 5681), (3933, 5447)]