21788228

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{59}}^1\times {\mathrm{109}}^1$

素因数の和:201

約数の個数: 72

約数和(自身を含む): 49156800

約数和(自身を除く): 27368572

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 59, 77, 109, 118, 121, 154, 218, 236, 242, 308, 413, 436, 484, 649, 763, 826, 847, 1199, 1298, 1526, 1652, 1694, 2398, 2596, 3052, 3388, 4543, 4796, 6431, 7139, 8393, 9086, 12862, 13189, 14278, 16786, 18172, 25724, 26378, 28556, 33572, 45017, 49973, 52756, 70741, 90034, 92323, 99946, 141482, 180068, 184646, 199892, 282964, 369292, 495187, 778151, 990374, 1556302, 1980748, 3112604, 5447057, 10894114, 21788228]

約数ペア:

[(1, 21788228), (2, 10894114), (4, 5447057), (7, 3112604), (11, 1980748), (14, 1556302), (22, 990374), (28, 778151), (44, 495187), (59, 369292), (77, 282964), (109, 199892), (118, 184646), (121, 180068), (154, 141482), (218, 99946), (236, 92323), (242, 90034), (308, 70741), (413, 52756), (436, 49973), (484, 45017), (649, 33572), (763, 28556), (826, 26378), (847, 25724), (1199, 18172), (1298, 16786), (1526, 14278), (1652, 13189), (1694, 12862), (2398, 9086), (2596, 8393), (3052, 7139), (3388, 6431), (4543, 4796)]