21036540

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{50087}}^1$

素因数の和:50106

約数の個数: 48

約数和(自身を含む): 67318272

約数和(自身を除く): 46281732

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, 50087, 100174, 150261, 200348, 250435, 300522, 350609, 500870, 601044, 701218, 751305, 1001740, 1051827, 1402436, 1502610, 1753045, 2103654, 3005220, 3506090, 4207308, 5259135, 7012180, 10518270, 21036540]

約数ペア:

[(1, 21036540), (2, 10518270), (3, 7012180), (4, 5259135), (5, 4207308), (6, 3506090), (7, 3005220), (10, 2103654), (12, 1753045), (14, 1502610), (15, 1402436), (20, 1051827), (21, 1001740), (28, 751305), (30, 701218), (35, 601044), (42, 500870), (60, 350609), (70, 300522), (84, 250435), (105, 200348), (140, 150261), (210, 100174), (420, 50087)]