21816284

素因数分解:

$2^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{241}}^1$

素因数の和:366

約数の個数: 48

約数和(自身を含む): 45372096

約数和(自身を除く): 23555812

約数列:

[1, 2, 4, 7, 14, 28, 53, 61, 106, 122, 212, 241, 244, 371, 427, 482, 742, 854, 964, 1484, 1687, 1708, 3233, 3374, 6466, 6748, 12773, 12932, 14701, 22631, 25546, 29402, 45262, 51092, 58804, 89411, 90524, 102907, 178822, 205814, 357644, 411628, 779153, 1558306, 3116612, 5454071, 10908142, 21816284]

約数ペア:

[(1, 21816284), (2, 10908142), (4, 5454071), (7, 3116612), (14, 1558306), (28, 779153), (53, 411628), (61, 357644), (106, 205814), (122, 178822), (212, 102907), (241, 90524), (244, 89411), (371, 58804), (427, 51092), (482, 45262), (742, 29402), (854, 25546), (964, 22631), (1484, 14701), (1687, 12932), (1708, 12773), (3233, 6748), (3374, 6466)]