640816

素因数分解:

$2^4\times {\mathrm{11}}^2\times {\mathrm{331}}^1$

素因数の和:361

約数の個数: 30

約数和(自身を含む): 1368836

約数和(自身を除く): 728020

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 121, 176, 242, 331, 484, 662, 968, 1324, 1936, 2648, 3641, 5296, 7282, 14564, 29128, 40051, 58256, 80102, 160204, 320408, 640816]

約数ペア:

[(1, 640816), (2, 320408), (4, 160204), (8, 80102), (11, 58256), (16, 40051), (22, 29128), (44, 14564), (88, 7282), (121, 5296), (176, 3641), (242, 2648), (331, 1936), (484, 1324), (662, 968)]