21306428

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{193}}^2$

素因数の和:414

約数の個数: 36

約数和(自身を含む): 44032968

約数和(自身を除く): 22726540

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 143, 193, 286, 386, 572, 772, 2123, 2509, 4246, 5018, 8492, 10036, 27599, 37249, 55198, 74498, 110396, 148996, 409739, 484237, 819478, 968474, 1638956, 1936948, 5326607, 10653214, 21306428]

約数ペア:

[(1, 21306428), (2, 10653214), (4, 5326607), (11, 1936948), (13, 1638956), (22, 968474), (26, 819478), (44, 484237), (52, 409739), (143, 148996), (193, 110396), (286, 74498), (386, 55198), (572, 37249), (772, 27599), (2123, 10036), (2509, 8492), (4246, 5018)]