21879998

素因数分解:

$2^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{79}}^1\times {\mathrm{271}}^1$

素因数の和:432

約数の個数: 32

約数和(自身を含む): 38645760

約数和(自身を除く): 16765762

約数列:

[1, 2, 7, 14, 73, 79, 146, 158, 271, 511, 542, 553, 1022, 1106, 1897, 3794, 5767, 11534, 19783, 21409, 39566, 40369, 42818, 80738, 138481, 149863, 276962, 299726, 1562857, 3125714, 10939999, 21879998]

約数ペア:

[(1, 21879998), (2, 10939999), (7, 3125714), (14, 1562857), (73, 299726), (79, 276962), (146, 149863), (158, 138481), (271, 80738), (511, 42818), (542, 40369), (553, 39566), (1022, 21409), (1106, 19783), (1897, 11534), (3794, 5767)]