20689354

素因数分解:

$2^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{131}}^1\times {\mathrm{389}}^1$

素因数の和:558

約数の個数: 32

約数和(自身を含む): 37065600

約数和(自身を除く): 16376246

約数列:

[1, 2, 7, 14, 29, 58, 131, 203, 262, 389, 406, 778, 917, 1834, 2723, 3799, 5446, 7598, 11281, 22562, 26593, 50959, 53186, 78967, 101918, 157934, 356713, 713426, 1477811, 2955622, 10344677, 20689354]

約数ペア:

[(1, 20689354), (2, 10344677), (7, 2955622), (14, 1477811), (29, 713426), (58, 356713), (131, 157934), (203, 101918), (262, 78967), (389, 53186), (406, 50959), (778, 26593), (917, 22562), (1834, 11281), (2723, 7598), (3799, 5446)]