19985976

素因数分解:

$2^3\times 3^2\times {\mathrm{139}}^1\times {\mathrm{1997}}^1$

素因数の和:2148

約数の個数: 48

約数和(自身を含む): 54545400

約数和(自身を除く): 34559424

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 139, 278, 417, 556, 834, 1112, 1251, 1668, 1997, 2502, 3336, 3994, 5004, 5991, 7988, 10008, 11982, 15976, 17973, 23964, 35946, 47928, 71892, 143784, 277583, 555166, 832749, 1110332, 1665498, 2220664, 2498247, 3330996, 4996494, 6661992, 9992988, 19985976]

約数ペア:

[(1, 19985976), (2, 9992988), (3, 6661992), (4, 4996494), (6, 3330996), (8, 2498247), (9, 2220664), (12, 1665498), (18, 1110332), (24, 832749), (36, 555166), (72, 277583), (139, 143784), (278, 71892), (417, 47928), (556, 35946), (834, 23964), (1112, 17973), (1251, 15976), (1668, 11982), (1997, 10008), (2502, 7988), (3336, 5991), (3994, 5004)]