21057608

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{233}}^1$

素因数の和:342

約数の個数: 64

約数和(自身を含む): 47174400

約数和(自身を除く): 26116792

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 44, 52, 79, 88, 104, 143, 158, 233, 286, 316, 466, 572, 632, 869, 932, 1027, 1144, 1738, 1864, 2054, 2563, 3029, 3476, 4108, 5126, 6058, 6952, 8216, 10252, 11297, 12116, 18407, 20504, 22594, 24232, 33319, 36814, 45188, 66638, 73628, 90376, 133276, 147256, 202477, 239291, 266552, 404954, 478582, 809908, 957164, 1619816, 1914328, 2632201, 5264402, 10528804, 21057608]

約数ペア:

[(1, 21057608), (2, 10528804), (4, 5264402), (8, 2632201), (11, 1914328), (13, 1619816), (22, 957164), (26, 809908), (44, 478582), (52, 404954), (79, 266552), (88, 239291), (104, 202477), (143, 147256), (158, 133276), (233, 90376), (286, 73628), (316, 66638), (466, 45188), (572, 36814), (632, 33319), (869, 24232), (932, 22594), (1027, 20504), (1144, 18407), (1738, 12116), (1864, 11297), (2054, 10252), (2563, 8216), (3029, 6952), (3476, 6058), (4108, 5126)]