19869784

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{89}}^1$

素因数の和:208

約数の個数: 64

約数和(自身を含む): 42768000

約数和(自身を除く): 22898216

約数列:

[1, 2, 4, 8, 11, 22, 43, 44, 59, 86, 88, 89, 118, 172, 178, 236, 344, 356, 472, 473, 649, 712, 946, 979, 1298, 1892, 1958, 2537, 2596, 3784, 3827, 3916, 5074, 5192, 5251, 7654, 7832, 10148, 10502, 15308, 20296, 21004, 27907, 30616, 42008, 42097, 55814, 57761, 84194, 111628, 115522, 168388, 223256, 225793, 231044, 336776, 451586, 462088, 903172, 1806344, 2483723, 4967446, 9934892, 19869784]

約数ペア:

[(1, 19869784), (2, 9934892), (4, 4967446), (8, 2483723), (11, 1806344), (22, 903172), (43, 462088), (44, 451586), (59, 336776), (86, 231044), (88, 225793), (89, 223256), (118, 168388), (172, 115522), (178, 111628), (236, 84194), (344, 57761), (356, 55814), (472, 42097), (473, 42008), (649, 30616), (712, 27907), (946, 21004), (979, 20296), (1298, 15308), (1892, 10502), (1958, 10148), (2537, 7832), (2596, 7654), (3784, 5251), (3827, 5192), (3916, 5074)]