19970877

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{127}}^1$

素因数の和:249

約数の個数: 32

約数和(自身を含む): 29196288

約数和(自身を除く): 9225411

約数列:

[1, 3, 23, 43, 53, 69, 127, 129, 159, 381, 989, 1219, 2279, 2921, 2967, 3657, 5461, 6731, 6837, 8763, 16383, 20193, 52417, 125603, 154813, 157251, 289433, 376809, 464439, 868299, 6656959, 19970877]

約数ペア:

[(1, 19970877), (3, 6656959), (23, 868299), (43, 464439), (53, 376809), (69, 289433), (127, 157251), (129, 154813), (159, 125603), (381, 52417), (989, 20193), (1219, 16383), (2279, 8763), (2921, 6837), (2967, 6731), (3657, 5461)]