21118936

素因数分解:

$2^3\times {\mathrm{31}}^2\times {\mathrm{41}}^1\times {\mathrm{67}}^1$

素因数の和:176

約数の個数: 48

約数和(自身を含む): 42540120

約数和(自身を除く): 21421184

約数列:

[1, 2, 4, 8, 31, 41, 62, 67, 82, 124, 134, 164, 248, 268, 328, 536, 961, 1271, 1922, 2077, 2542, 2747, 3844, 4154, 5084, 5494, 7688, 8308, 10168, 10988, 16616, 21976, 39401, 64387, 78802, 85157, 128774, 157604, 170314, 257548, 315208, 340628, 515096, 681256, 2639867, 5279734, 10559468, 21118936]

約数ペア:

[(1, 21118936), (2, 10559468), (4, 5279734), (8, 2639867), (31, 681256), (41, 515096), (62, 340628), (67, 315208), (82, 257548), (124, 170314), (134, 157604), (164, 128774), (248, 85157), (268, 78802), (328, 64387), (536, 39401), (961, 21976), (1271, 16616), (1922, 10988), (2077, 10168), (2542, 8308), (2747, 7688), (3844, 5494), (4154, 5084)]