278193855

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{13219}}^1$

素因数の和:13311

約数の個数: 32

約数和(自身を含む): 472112640

約数和(自身を除く): 193918785

約数列:

[1, 3, 5, 15, 23, 61, 69, 115, 183, 305, 345, 915, 1403, 4209, 7015, 13219, 21045, 39657, 66095, 198285, 304037, 806359, 912111, 1520185, 2419077, 4031795, 4560555, 12095385, 18546257, 55638771, 92731285, 278193855]

約数ペア:

[(1, 278193855), (3, 92731285), (5, 55638771), (15, 18546257), (23, 12095385), (61, 4560555), (69, 4031795), (115, 2419077), (183, 1520185), (305, 912111), (345, 806359), (915, 304037), (1403, 198285), (4209, 66095), (7015, 39657), (13219, 21045)]