1999400

素因数分解:

$2^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{769}}^1$

素因数の和:798

約数の個数: 48

約数和(自身を含む): 5012700

約数和(自身を除く): 3013300

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, 769, 1300, 1538, 2600, 3076, 3845, 6152, 7690, 9997, 15380, 19225, 19994, 30760, 38450, 39988, 49985, 76900, 79976, 99970, 153800, 199940, 249925, 399880, 499850, 999700, 1999400]

約数ペア:

[(1, 1999400), (2, 999700), (4, 499850), (5, 399880), (8, 249925), (10, 199940), (13, 153800), (20, 99970), (25, 79976), (26, 76900), (40, 49985), (50, 39988), (52, 38450), (65, 30760), (100, 19994), (104, 19225), (130, 15380), (200, 9997), (260, 7690), (325, 6152), (520, 3845), (650, 3076), (769, 2600), (1300, 1538)]