18611997

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{103}}^1$

素因数の和:233

約数の個数: 32

約数和(自身を含む): 27156480

約数和(自身を除く): 8544483

約数列:

[1, 3, 29, 31, 67, 87, 93, 103, 201, 309, 899, 1943, 2077, 2697, 2987, 3193, 5829, 6231, 6901, 8961, 9579, 20703, 60233, 92597, 180699, 200129, 213931, 277791, 600387, 641793, 6203999, 18611997]

約数ペア:

[(1, 18611997), (3, 6203999), (29, 641793), (31, 600387), (67, 277791), (87, 213931), (93, 200129), (103, 180699), (201, 92597), (309, 60233), (899, 20703), (1943, 9579), (2077, 8961), (2697, 6901), (2987, 6231), (3193, 5829)]