21249165

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{1289}}^1$

素因数の和:1461

約数の個数: 32

約数和(自身を含む): 39133440

約数和(自身を除く): 17884275

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 157, 471, 785, 1099, 1289, 2355, 3297, 3867, 5495, 6445, 9023, 16485, 19335, 27069, 45115, 135345, 202373, 607119, 1011865, 1416611, 3035595, 4249833, 7083055, 21249165]

約数ペア:

[(1, 21249165), (3, 7083055), (5, 4249833), (7, 3035595), (15, 1416611), (21, 1011865), (35, 607119), (105, 202373), (157, 135345), (471, 45115), (785, 27069), (1099, 19335), (1289, 16485), (2355, 9023), (3297, 6445), (3867, 5495)]