21163818

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{251}}^1$

素因数の和:339

約数の個数: 64

約数和(自身を含む): 48771072

約数和(自身を除く): 27607254

約数列:

[1, 2, 3, 6, 13, 23, 26, 39, 46, 47, 69, 78, 94, 138, 141, 251, 282, 299, 502, 598, 611, 753, 897, 1081, 1222, 1506, 1794, 1833, 2162, 3243, 3263, 3666, 5773, 6486, 6526, 9789, 11546, 11797, 14053, 17319, 19578, 23594, 28106, 34638, 35391, 42159, 70782, 75049, 84318, 150098, 153361, 225147, 271331, 306722, 450294, 460083, 542662, 813993, 920166, 1627986, 3527303, 7054606, 10581909, 21163818]

約数ペア:

[(1, 21163818), (2, 10581909), (3, 7054606), (6, 3527303), (13, 1627986), (23, 920166), (26, 813993), (39, 542662), (46, 460083), (47, 450294), (69, 306722), (78, 271331), (94, 225147), (138, 153361), (141, 150098), (251, 84318), (282, 75049), (299, 70782), (502, 42159), (598, 35391), (611, 34638), (753, 28106), (897, 23594), (1081, 19578), (1222, 17319), (1506, 14053), (1794, 11797), (1833, 11546), (2162, 9789), (3243, 6526), (3263, 6486), (3666, 5773)]