21195351

素因数分解:

$3^4\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{367}}^1$

素因数の和:433

約数の個数: 40

約数和(自身を含む): 34197504

約数和(自身を除く): 13002153

約数列:

[1, 3, 9, 23, 27, 31, 69, 81, 93, 207, 279, 367, 621, 713, 837, 1101, 1863, 2139, 2511, 3303, 6417, 8441, 9909, 11377, 19251, 25323, 29727, 34131, 57753, 75969, 102393, 227907, 261671, 307179, 683721, 785013, 921537, 2355039, 7065117, 21195351]

約数ペア:

[(1, 21195351), (3, 7065117), (9, 2355039), (23, 921537), (27, 785013), (31, 683721), (69, 307179), (81, 261671), (93, 227907), (207, 102393), (279, 75969), (367, 57753), (621, 34131), (713, 29727), (837, 25323), (1101, 19251), (1863, 11377), (2139, 9909), (2511, 8441), (3303, 6417)]