388732760

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{747563}}^1$

素因数の和:747587

約数の個数: 32

約数和(自身を含む): 941930640

約数和(自身を除く): 553197880

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 747563, 1495126, 2990252, 3737815, 5980504, 7475630, 9718319, 14951260, 19436638, 29902520, 38873276, 48591595, 77746552, 97183190, 194366380, 388732760]

約数ペア:

[(1, 388732760), (2, 194366380), (4, 97183190), (5, 77746552), (8, 48591595), (10, 38873276), (13, 29902520), (20, 19436638), (26, 14951260), (40, 9718319), (52, 7475630), (65, 5980504), (104, 3737815), (130, 2990252), (260, 1495126), (520, 747563)]