278897528

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{383101}}^1$

素因数の和:383127

約数の個数: 32

約数和(自身を含む): 643611360

約数和(自身を除く): 364713832

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 182, 364, 728, 383101, 766202, 1532404, 2681707, 3064808, 4980313, 5363414, 9960626, 10726828, 19921252, 21453656, 34862191, 39842504, 69724382, 139448764, 278897528]

約数ペア:

[(1, 278897528), (2, 139448764), (4, 69724382), (7, 39842504), (8, 34862191), (13, 21453656), (14, 19921252), (26, 10726828), (28, 9960626), (52, 5363414), (56, 4980313), (91, 3064808), (104, 2681707), (182, 1532404), (364, 766202), (728, 383101)]