1285455555

素因数分解:

$3^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{60649}}^1$

素因数の和:60820

約数の個数: 32

約数和(自身を含む): 2299848000

約数和(自身を除く): 1014392445

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 157, 471, 785, 1413, 2355, 4239, 7065, 21195, 60649, 181947, 303245, 545841, 909735, 1637523, 2729205, 8187615, 9521893, 28565679, 47609465, 85697037, 142828395, 257091111, 428485185, 1285455555]

約数ペア:

[(1, 1285455555), (3, 428485185), (5, 257091111), (9, 142828395), (15, 85697037), (27, 47609465), (45, 28565679), (135, 9521893), (157, 8187615), (471, 2729205), (785, 1637523), (1413, 909735), (2355, 545841), (4239, 303245), (7065, 181947), (21195, 60649)]