21150780

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{50359}}^1$

素因数の和:50378

約数の個数: 48

約数和(自身を含む): 67683840

約数和(自身を除く): 46533060

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, 50359, 100718, 151077, 201436, 251795, 302154, 352513, 503590, 604308, 705026, 755385, 1007180, 1057539, 1410052, 1510770, 1762565, 2115078, 3021540, 3525130, 4230156, 5287695, 7050260, 10575390, 21150780]

約数ペア:

[(1, 21150780), (2, 10575390), (3, 7050260), (4, 5287695), (5, 4230156), (6, 3525130), (7, 3021540), (10, 2115078), (12, 1762565), (14, 1510770), (15, 1410052), (20, 1057539), (21, 1007180), (28, 755385), (30, 705026), (35, 604308), (42, 503590), (60, 352513), (70, 302154), (84, 251795), (105, 201436), (140, 151077), (210, 100718), (420, 50359)]