21505418

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1\times {\mathrm{179}}^1$

素因数の和:362

約数の個数: 32

約数和(自身を含む): 36495360

約数和(自身を除く): 14989942

約数列:

[1, 2, 11, 22, 43, 86, 127, 179, 254, 358, 473, 946, 1397, 1969, 2794, 3938, 5461, 7697, 10922, 15394, 22733, 45466, 60071, 84667, 120142, 169334, 250063, 500126, 977519, 1955038, 10752709, 21505418]

約数ペア:

[(1, 21505418), (2, 10752709), (11, 1955038), (22, 977519), (43, 500126), (86, 250063), (127, 169334), (179, 120142), (254, 84667), (358, 60071), (473, 45466), (946, 22733), (1397, 15394), (1969, 10922), (2794, 7697), (3938, 5461)]