21756

素因数分解:

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

素因数の和:58

約数の個数: 36

約数和(自身を含む): 60648

約数和(自身を除く): 38892

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 37, 42, 49, 74, 84, 98, 111, 147, 148, 196, 222, 259, 294, 444, 518, 588, 777, 1036, 1554, 1813, 3108, 3626, 5439, 7252, 10878, 21756]

約数ペア:

[(1, 21756), (2, 10878), (3, 7252), (4, 5439), (6, 3626), (7, 3108), (12, 1813), (14, 1554), (21, 1036), (28, 777), (37, 588), (42, 518), (49, 444), (74, 294), (84, 259), (98, 222), (111, 196), (147, 148)]