278229217

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{421}}^1\times {\mathrm{4969}}^1$

素因数の和:5416

約数の個数: 16

約数和(自身を含む): 335574400

約数和(自身を除く): 57345183

約数列:

[1, 7, 19, 133, 421, 2947, 4969, 7999, 34783, 55993, 94411, 660877, 2091949, 14643643, 39747031, 278229217]

約数ペア:

[(1, 278229217), (7, 39747031), (19, 14643643), (133, 2091949), (421, 660877), (2947, 94411), (4969, 55993), (7999, 34783)]