16401520

素因数分解:

$2^4\times 5^1\times {\mathrm{205019}}^1$

素因数の和:205032

約数の個数: 20

約数和(自身を含む): 38133720

約数和(自身を除く): 21732200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 205019, 410038, 820076, 1025095, 1640152, 2050190, 3280304, 4100380, 8200760, 16401520]

約数ペア:

[(1, 16401520), (2, 8200760), (4, 4100380), (5, 3280304), (8, 2050190), (10, 1640152), (16, 1025095), (20, 820076), (40, 410038), (80, 205019)]