18701955

素因数分解:

$3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{281}}^1$

素因数の和:341

約数の個数: 64

約数和(自身を含む): 36547200

約数和(自身を除く): 17845245

約数列:

[1, 3, 5, 9, 15, 17, 27, 29, 45, 51, 85, 87, 135, 145, 153, 255, 261, 281, 435, 459, 493, 765, 783, 843, 1305, 1405, 1479, 2295, 2465, 2529, 3915, 4215, 4437, 4777, 7395, 7587, 8149, 12645, 13311, 14331, 22185, 23885, 24447, 37935, 40745, 42993, 66555, 71655, 73341, 122235, 128979, 138533, 214965, 220023, 366705, 415599, 644895, 692665, 1100115, 1246797, 2077995, 3740391, 6233985, 18701955]

約数ペア:

[(1, 18701955), (3, 6233985), (5, 3740391), (9, 2077995), (15, 1246797), (17, 1100115), (27, 692665), (29, 644895), (45, 415599), (51, 366705), (85, 220023), (87, 214965), (135, 138533), (145, 128979), (153, 122235), (255, 73341), (261, 71655), (281, 66555), (435, 42993), (459, 40745), (493, 37935), (765, 24447), (783, 23885), (843, 22185), (1305, 14331), (1405, 13311), (1479, 12645), (2295, 8149), (2465, 7587), (2529, 7395), (3915, 4777), (4215, 4437)]