19985860

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{24373}}^1$

素因数の和:24423

約数の個数: 24

約数和(自身を含む): 42995736

約数和(自身を除く): 23009876

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 24373, 48746, 97492, 121865, 243730, 487460, 999293, 1998586, 3997172, 4996465, 9992930, 19985860]

約数ペア:

[(1, 19985860), (2, 9992930), (4, 4996465), (5, 3997172), (10, 1998586), (20, 999293), (41, 487460), (82, 243730), (164, 121865), (205, 97492), (410, 48746), (820, 24373)]