81765940

素因数分解:

$2^2\times 5^1\times {\mathrm{983}}^1\times {\mathrm{4159}}^1$

素因数の和:5151

約数の個数: 24

約数和(自身を含む): 171924480

約数和(自身を除く): 90158540

約数列:

[1, 2, 4, 5, 10, 20, 983, 1966, 3932, 4159, 4915, 8318, 9830, 16636, 19660, 20795, 41590, 83180, 4088297, 8176594, 16353188, 20441485, 40882970, 81765940]

約数ペア:

[(1, 81765940), (2, 40882970), (4, 20441485), (5, 16353188), (10, 8176594), (20, 4088297), (983, 83180), (1966, 41590), (3932, 20795), (4159, 19660), (4915, 16636), (8318, 9830)]