19866945

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{431}}^1\times {\mathrm{439}}^1$

素因数の和:885

約数の個数: 32

約数和(自身を含む): 36495360

約数和(自身を除く): 16628415

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 431, 439, 1293, 1317, 2155, 2195, 3017, 3073, 6465, 6585, 9051, 9219, 15085, 15365, 45255, 46095, 189209, 567627, 946045, 1324463, 2838135, 3973389, 6622315, 19866945]

約数ペア:

[(1, 19866945), (3, 6622315), (5, 3973389), (7, 2838135), (15, 1324463), (21, 946045), (35, 567627), (105, 189209), (431, 46095), (439, 45255), (1293, 15365), (1317, 15085), (2155, 9219), (2195, 9051), (3017, 6585), (3073, 6465)]