28157487

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{73}}^1\times {\mathrm{101}}^1$

素因数の和:263

約数の個数: 32

約数和(自身を含む): 41061120

約数和(自身を除く): 12903633

約数列:

[1, 3, 19, 57, 67, 73, 101, 201, 219, 303, 1273, 1387, 1919, 3819, 4161, 4891, 5757, 6767, 7373, 14673, 20301, 22119, 92929, 128573, 140087, 278787, 385719, 420261, 493991, 1481973, 9385829, 28157487]

約数ペア:

[(1, 28157487), (3, 9385829), (19, 1481973), (57, 493991), (67, 420261), (73, 385719), (101, 278787), (201, 140087), (219, 128573), (303, 92929), (1273, 22119), (1387, 20301), (1919, 14673), (3819, 7373), (4161, 6767), (4891, 5757)]