21218912

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{4637}}^1$

素因数の和:4671

約数の個数: 48

約数和(自身を含む): 49088592

約数和(自身を除く): 27869680

約数列:

[1, 2, 4, 8, 11, 13, 16, 22, 26, 32, 44, 52, 88, 104, 143, 176, 208, 286, 352, 416, 572, 1144, 2288, 4576, 4637, 9274, 18548, 37096, 51007, 60281, 74192, 102014, 120562, 148384, 204028, 241124, 408056, 482248, 663091, 816112, 964496, 1326182, 1632224, 1928992, 2652364, 5304728, 10609456, 21218912]

約数ペア:

[(1, 21218912), (2, 10609456), (4, 5304728), (8, 2652364), (11, 1928992), (13, 1632224), (16, 1326182), (22, 964496), (26, 816112), (32, 663091), (44, 482248), (52, 408056), (88, 241124), (104, 204028), (143, 148384), (176, 120562), (208, 102014), (286, 74192), (352, 60281), (416, 51007), (572, 37096), (1144, 18548), (2288, 9274), (4576, 4637)]