18239840

素因数分解:

$2^5\times 5^1\times {\mathrm{29}}^1\times {\mathrm{3931}}^1$

素因数の和:3975

約数の個数: 48

約数和(自身を含む): 44588880

約数和(自身を除く): 26349040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 58, 80, 116, 145, 160, 232, 290, 464, 580, 928, 1160, 2320, 3931, 4640, 7862, 15724, 19655, 31448, 39310, 62896, 78620, 113999, 125792, 157240, 227998, 314480, 455996, 569995, 628960, 911992, 1139990, 1823984, 2279980, 3647968, 4559960, 9119920, 18239840]

約数ペア:

[(1, 18239840), (2, 9119920), (4, 4559960), (5, 3647968), (8, 2279980), (10, 1823984), (16, 1139990), (20, 911992), (29, 628960), (32, 569995), (40, 455996), (58, 314480), (80, 227998), (116, 157240), (145, 125792), (160, 113999), (232, 78620), (290, 62896), (464, 39310), (580, 31448), (928, 19655), (1160, 15724), (2320, 7862), (3931, 4640)]