491121520

素因数分解:

$2^4\times 5^1\times {\mathrm{6139019}}^1$

素因数の和:6139032

約数の個数: 20

約数和(自身を含む): 1141857720

約数和(自身を除く): 650736200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 6139019, 12278038, 24556076, 30695095, 49112152, 61390190, 98224304, 122780380, 245560760, 491121520]

約数ペア:

[(1, 491121520), (2, 245560760), (4, 122780380), (5, 98224304), (8, 61390190), (10, 49112152), (16, 30695095), (20, 24556076), (40, 12278038), (80, 6139019)]