2145555

素因数分解:

$3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{691}}^1$

素因数の和:728

約数の個数: 32

約数和(自身を含む): 3985920

約数和(自身を除く): 1840365

約数列:

[1, 3, 5, 9, 15, 23, 27, 45, 69, 115, 135, 207, 345, 621, 691, 1035, 2073, 3105, 3455, 6219, 10365, 15893, 18657, 31095, 47679, 79465, 93285, 143037, 238395, 429111, 715185, 2145555]

約数ペア:

[(1, 2145555), (3, 715185), (5, 429111), (9, 238395), (15, 143037), (23, 93285), (27, 79465), (45, 47679), (69, 31095), (115, 18657), (135, 15893), (207, 10365), (345, 6219), (621, 3455), (691, 3105), (1035, 2073)]