80821660

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{98563}}^1$

素因数の和:98613

約数の個数: 24

約数和(自身を含む): 173866896

約数和(自身を除く): 93045236

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 98563, 197126, 394252, 492815, 985630, 1971260, 4041083, 8082166, 16164332, 20205415, 40410830, 80821660]

約数ペア:

[(1, 80821660), (2, 40410830), (4, 20205415), (5, 16164332), (10, 8082166), (20, 4041083), (41, 1971260), (82, 985630), (164, 492815), (205, 394252), (410, 197126), (820, 98563)]