278204290

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{305719}}^1$

素因数の和:305746

約数の個数: 32

約数和(自身を含む): 616331520

約数和(自身を除く): 338127230

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 65, 70, 91, 130, 182, 455, 910, 305719, 611438, 1528595, 2140033, 3057190, 3974347, 4280066, 7948694, 10700165, 19871735, 21400330, 27820429, 39743470, 55640858, 139102145, 278204290]

約数ペア:

[(1, 278204290), (2, 139102145), (5, 55640858), (7, 39743470), (10, 27820429), (13, 21400330), (14, 19871735), (26, 10700165), (35, 7948694), (65, 4280066), (70, 3974347), (91, 3057190), (130, 2140033), (182, 1528595), (455, 611438), (910, 305719)]