81903488

素因数分解:

$2^7\times {\mathrm{31}}^1\times {\mathrm{20641}}^1$

素因数の和:20686

約数の個数: 32

約数和(自身を含む): 168438720

約数和(自身を除く): 86535232

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 124, 128, 248, 496, 992, 1984, 3968, 20641, 41282, 82564, 165128, 330256, 639871, 660512, 1279742, 1321024, 2559484, 2642048, 5118968, 10237936, 20475872, 40951744, 81903488]

約数ペア:

[(1, 81903488), (2, 40951744), (4, 20475872), (8, 10237936), (16, 5118968), (31, 2642048), (32, 2559484), (62, 1321024), (64, 1279742), (124, 660512), (128, 639871), (248, 330256), (496, 165128), (992, 82564), (1984, 41282), (3968, 20641)]