21188013

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^2\times {\mathrm{67}}^1$

素因数の和:162

約数の個数: 48

約数和(自身を含む): 36739584

約数和(自身を除く): 15551571

約数列:

[1, 3, 7, 11, 21, 33, 37, 67, 77, 111, 201, 231, 259, 407, 469, 737, 777, 1221, 1369, 1407, 2211, 2479, 2849, 4107, 5159, 7437, 8547, 9583, 15059, 15477, 17353, 27269, 28749, 45177, 52059, 81807, 91723, 105413, 190883, 275169, 316239, 572649, 642061, 1008953, 1926183, 3026859, 7062671, 21188013]

約数ペア:

[(1, 21188013), (3, 7062671), (7, 3026859), (11, 1926183), (21, 1008953), (33, 642061), (37, 572649), (67, 316239), (77, 275169), (111, 190883), (201, 105413), (231, 91723), (259, 81807), (407, 52059), (469, 45177), (737, 28749), (777, 27269), (1221, 17353), (1369, 15477), (1407, 15059), (2211, 9583), (2479, 8547), (2849, 7437), (4107, 5159)]