21850209

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{191}}^1\times {\mathrm{223}}^1$

素因数の和:442

約数の個数: 32

約数和(自身を含む): 34406400

約数和(自身を除く): 12556191

約数列:

[1, 3, 9, 19, 27, 57, 171, 191, 223, 513, 573, 669, 1719, 2007, 3629, 4237, 5157, 6021, 10887, 12711, 32661, 38133, 42593, 97983, 114399, 127779, 383337, 809267, 1150011, 2427801, 7283403, 21850209]

約数ペア:

[(1, 21850209), (3, 7283403), (9, 2427801), (19, 1150011), (27, 809267), (57, 383337), (171, 127779), (191, 114399), (223, 97983), (513, 42593), (573, 38133), (669, 32661), (1719, 12711), (2007, 10887), (3629, 6021), (4237, 5157)]