18951218

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1$

素因数の和:159

約数の個数: 64

約数和(自身を含む): 36191232

約数和(自身を除く): 17240014

約数列:

[1, 2, 11, 13, 22, 23, 26, 43, 46, 67, 86, 134, 143, 253, 286, 299, 473, 506, 559, 598, 737, 871, 946, 989, 1118, 1474, 1541, 1742, 1978, 2881, 3082, 3289, 5762, 6149, 6578, 9581, 10879, 12298, 12857, 16951, 19162, 20033, 21758, 25714, 31691, 33902, 37453, 40066, 63382, 66263, 74906, 132526, 141427, 220363, 282854, 411983, 440726, 728893, 823966, 861419, 1457786, 1722838, 9475609, 18951218]

約数ペア:

[(1, 18951218), (2, 9475609), (11, 1722838), (13, 1457786), (22, 861419), (23, 823966), (26, 728893), (43, 440726), (46, 411983), (67, 282854), (86, 220363), (134, 141427), (143, 132526), (253, 74906), (286, 66263), (299, 63382), (473, 40066), (506, 37453), (559, 33902), (598, 31691), (737, 25714), (871, 21758), (946, 20033), (989, 19162), (1118, 16951), (1474, 12857), (1541, 12298), (1742, 10879), (1978, 9581), (2881, 6578), (3082, 6149), (3289, 5762)]