21027188

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{947}}^1$

素因数の和:1032

約数の個数: 48

約数和(自身を含む): 46080384

約数和(自身を除く): 25053196

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 61, 91, 122, 182, 244, 364, 427, 793, 854, 947, 1586, 1708, 1894, 3172, 3788, 5551, 6629, 11102, 12311, 13258, 22204, 24622, 26516, 49244, 57767, 86177, 115534, 172354, 231068, 344708, 404369, 750971, 808738, 1501942, 1617476, 3003884, 5256797, 10513594, 21027188]

約数ペア:

[(1, 21027188), (2, 10513594), (4, 5256797), (7, 3003884), (13, 1617476), (14, 1501942), (26, 808738), (28, 750971), (52, 404369), (61, 344708), (91, 231068), (122, 172354), (182, 115534), (244, 86177), (364, 57767), (427, 49244), (793, 26516), (854, 24622), (947, 22204), (1586, 13258), (1708, 12311), (1894, 11102), (3172, 6629), (3788, 5551)]