84712840

素因数分解:

$2^3\times 5^1\times {\mathrm{2117821}}^1$

素因数の和:2117832

約数の個数: 16

約数和(自身を含む): 190603980

約数和(自身を除く): 105891140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2117821, 4235642, 8471284, 10589105, 16942568, 21178210, 42356420, 84712840]

約数ペア:

[(1, 84712840), (2, 42356420), (4, 21178210), (5, 16942568), (8, 10589105), (10, 8471284), (20, 4235642), (40, 2117821)]