278315947

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{22003}}^1$

素因数の和:22162

約数の個数: 16

約数和(自身を含む): 345022720

約数和(自身を除く): 66706773

約数列:

[1, 7, 13, 91, 139, 973, 1807, 12649, 22003, 154021, 286039, 2002273, 3058417, 21408919, 39759421, 278315947]

約数ペア:

[(1, 278315947), (7, 39759421), (13, 21408919), (91, 3058417), (139, 2002273), (973, 286039), (1807, 154021), (12649, 22003)]