278375279

素因数分解:

$7^1\times {\mathrm{13}}^3\times {\mathrm{23}}^1\times {\mathrm{787}}^1$

素因数の和:856

約数の個数: 32

約数和(自身を含む): 360084480

約数和(自身を除く): 81709201

約数列:

[1, 7, 13, 23, 91, 161, 169, 299, 787, 1183, 2093, 2197, 3887, 5509, 10231, 15379, 18101, 27209, 50531, 71617, 126707, 133003, 235313, 353717, 931021, 1647191, 1729039, 3059069, 12103273, 21413483, 39767897, 278375279]

約数ペア:

[(1, 278375279), (7, 39767897), (13, 21413483), (23, 12103273), (91, 3059069), (161, 1729039), (169, 1647191), (299, 931021), (787, 353717), (1183, 235313), (2093, 133003), (2197, 126707), (3887, 71617), (5509, 50531), (10231, 27209), (15379, 18101)]