78682820

素因数分解:

$2^2\times 5^1\times {\mathrm{1907}}^1\times {\mathrm{2063}}^1$

素因数の和:3979

約数の個数: 24

約数和(自身を含む): 165400704

約数和(自身を除く): 86717884

約数列:

[1, 2, 4, 5, 10, 20, 1907, 2063, 3814, 4126, 7628, 8252, 9535, 10315, 19070, 20630, 38140, 41260, 3934141, 7868282, 15736564, 19670705, 39341410, 78682820]

約数ペア:

[(1, 78682820), (2, 39341410), (4, 19670705), (5, 15736564), (10, 7868282), (20, 3934141), (1907, 41260), (2063, 38140), (3814, 20630), (4126, 19070), (7628, 10315), (8252, 9535)]