21246540

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{50587}}^1$

素因数の和:50606

約数の個数: 48

約数和(自身を含む): 67990272

約数和(自身を除く): 46743732

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 50587, 101174, 151761, 202348, 252935, 303522, 354109, 505870, 607044, 708218, 758805, 1011740, 1062327, 1416436, 1517610, 1770545, 2124654, 3035220, 3541090, 4249308, 5311635, 7082180, 10623270, 21246540]

約数ペア:

[(1, 21246540), (2, 10623270), (3, 7082180), (4, 5311635), (5, 4249308), (6, 3541090), (7, 3035220), (10, 2124654), (12, 1770545), (14, 1517610), (15, 1416436), (20, 1062327), (21, 1011740), (28, 758805), (30, 708218), (35, 607044), (42, 505870), (60, 354109), (70, 303522), (84, 252935), (105, 202348), (140, 151761), (210, 101174), (420, 50587)]