128319880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{246769}}^1$

素因数の和:246793

約数の個数: 32

約数和(自身を含む): 310930200

約数和(自身を除く): 182610320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 246769, 493538, 987076, 1233845, 1974152, 2467690, 3207997, 4935380, 6415994, 9870760, 12831988, 16039985, 25663976, 32079970, 64159940, 128319880]

約数ペア:

[(1, 128319880), (2, 64159940), (4, 32079970), (5, 25663976), (8, 16039985), (10, 12831988), (13, 9870760), (20, 6415994), (26, 4935380), (40, 3207997), (52, 2467690), (65, 1974152), (104, 1233845), (130, 987076), (260, 493538), (520, 246769)]