20079800

素因数分解:

$2^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{7723}}^1$

素因数の和:7752

約数の個数: 48

約数和(自身を含む): 50283240

約数和(自身を除く): 30203440

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 130, 200, 260, 325, 520, 650, 1300, 2600, 7723, 15446, 30892, 38615, 61784, 77230, 100399, 154460, 193075, 200798, 308920, 386150, 401596, 501995, 772300, 803192, 1003990, 1544600, 2007980, 2509975, 4015960, 5019950, 10039900, 20079800]

約数ペア:

[(1, 20079800), (2, 10039900), (4, 5019950), (5, 4015960), (8, 2509975), (10, 2007980), (13, 1544600), (20, 1003990), (25, 803192), (26, 772300), (40, 501995), (50, 401596), (52, 386150), (65, 308920), (100, 200798), (104, 193075), (130, 154460), (200, 100399), (260, 77230), (325, 61784), (520, 38615), (650, 30892), (1300, 15446), (2600, 7723)]