20805860

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{25373}}^1$

素因数の和:25423

約数の個数: 24

約数和(自身を含む): 44759736

約数和(自身を除く): 23953876

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 25373, 50746, 101492, 126865, 253730, 507460, 1040293, 2080586, 4161172, 5201465, 10402930, 20805860]

約数ペア:

[(1, 20805860), (2, 10402930), (4, 5201465), (5, 4161172), (10, 2080586), (20, 1040293), (41, 507460), (82, 253730), (164, 126865), (205, 101492), (410, 50746), (820, 25373)]