21204524

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{193}}^1\times {\mathrm{227}}^1$

素因数の和:446

約数の個数: 36

約数和(自身を含む): 41179992

約数和(自身を除く): 19975468

約数列:

[1, 2, 4, 11, 22, 44, 121, 193, 227, 242, 386, 454, 484, 772, 908, 2123, 2497, 4246, 4994, 8492, 9988, 23353, 27467, 43811, 46706, 54934, 87622, 93412, 109868, 175244, 481921, 963842, 1927684, 5301131, 10602262, 21204524]

約数ペア:

[(1, 21204524), (2, 10602262), (4, 5301131), (11, 1927684), (22, 963842), (44, 481921), (121, 175244), (193, 109868), (227, 93412), (242, 87622), (386, 54934), (454, 46706), (484, 43811), (772, 27467), (908, 23353), (2123, 9988), (2497, 8492), (4246, 4994)]