89421820

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{167}}^1\times {\mathrm{653}}^1$

素因数の和:870

約数の個数: 48

約数和(自身を含む): 193814208

約数和(自身を除く): 104392388

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 167, 205, 334, 410, 653, 668, 820, 835, 1306, 1670, 2612, 3265, 3340, 6530, 6847, 13060, 13694, 26773, 27388, 34235, 53546, 68470, 107092, 109051, 133865, 136940, 218102, 267730, 436204, 535460, 545255, 1090510, 2181020, 4471091, 8942182, 17884364, 22355455, 44710910, 89421820]

約数ペア:

[(1, 89421820), (2, 44710910), (4, 22355455), (5, 17884364), (10, 8942182), (20, 4471091), (41, 2181020), (82, 1090510), (164, 545255), (167, 535460), (205, 436204), (334, 267730), (410, 218102), (653, 136940), (668, 133865), (820, 109051), (835, 107092), (1306, 68470), (1670, 53546), (2612, 34235), (3265, 27388), (3340, 26773), (6530, 13694), (6847, 13060)]