278820018

素因数分解:

$2^1\times 3^2\times {\mathrm{15490001}}^1$

素因数の和:15490009

約数の個数: 12

約数和(自身を含む): 604110078

約数和(自身を除く): 325290060

約数列:

[1, 2, 3, 6, 9, 18, 15490001, 30980002, 46470003, 92940006, 139410009, 278820018]

約数ペア:

[(1, 278820018), (2, 139410009), (3, 92940006), (6, 46470003), (9, 30980002), (18, 15490001)]