81285968

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{163883}}^1$

素因数の和:163922

約数の個数: 20

約数和(自身を含む): 162572928

約数和(自身を除く): 81286960

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 163883, 327766, 655532, 1311064, 2622128, 5080373, 10160746, 20321492, 40642984, 81285968]

約数ペア:

[(1, 81285968), (2, 40642984), (4, 20321492), (8, 10160746), (16, 5080373), (31, 2622128), (62, 1311064), (124, 655532), (248, 327766), (496, 163883)]