278328869

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{10657}}^1$

素因数の和:10725

約数の個数: 24

約数和(自身を含む): 357213528

約数和(自身を除く): 78884659

約数列:

[1, 7, 13, 41, 49, 91, 287, 533, 637, 2009, 3731, 10657, 26117, 74599, 138541, 436937, 522193, 969787, 3058559, 5680181, 6788509, 21409913, 39761267, 278328869]

約数ペア:

[(1, 278328869), (7, 39761267), (13, 21409913), (41, 6788509), (49, 5680181), (91, 3058559), (287, 969787), (533, 522193), (637, 436937), (2009, 138541), (3731, 74599), (10657, 26117)]