21448815

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^2\times {\mathrm{233}}^1$

素因数の和:296

約数の個数: 48

約数和(自身を含む): 38514528

約数和(自身を除く): 17065713

約数列:

[1, 3, 5, 15, 17, 19, 51, 57, 85, 95, 233, 255, 285, 323, 361, 699, 969, 1083, 1165, 1615, 1805, 3495, 3961, 4427, 4845, 5415, 6137, 11883, 13281, 18411, 19805, 22135, 30685, 59415, 66405, 75259, 84113, 92055, 225777, 252339, 376295, 420565, 1128885, 1261695, 1429921, 4289763, 7149605, 21448815]

約数ペア:

[(1, 21448815), (3, 7149605), (5, 4289763), (15, 1429921), (17, 1261695), (19, 1128885), (51, 420565), (57, 376295), (85, 252339), (95, 225777), (233, 92055), (255, 84113), (285, 75259), (323, 66405), (361, 59415), (699, 30685), (969, 22135), (1083, 19805), (1165, 18411), (1615, 13281), (1805, 11883), (3495, 6137), (3961, 5415), (4427, 4845)]