28457781

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1\times {\mathrm{211}}^1$

素因数の和:353

約数の個数: 32

約数和(自身を含む): 42902016

約数和(自身を除く): 14444235

約数列:

[1, 3, 11, 33, 61, 67, 183, 201, 211, 633, 671, 737, 2013, 2211, 2321, 4087, 6963, 12261, 12871, 14137, 38613, 42411, 44957, 134871, 141581, 155507, 424743, 466521, 862357, 2587071, 9485927, 28457781]

約数ペア:

[(1, 28457781), (3, 9485927), (11, 2587071), (33, 862357), (61, 466521), (67, 424743), (183, 155507), (201, 141581), (211, 134871), (633, 44957), (671, 42411), (737, 38613), (2013, 14137), (2211, 12871), (2321, 12261), (4087, 6963)]