21780536

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{8429}}^1$

素因数の和:8471

約数の個数: 32

約数和(自身を含む): 45522000

約数和(自身を除く): 23741464

約数列:

[1, 2, 4, 8, 17, 19, 34, 38, 68, 76, 136, 152, 323, 646, 1292, 2584, 8429, 16858, 33716, 67432, 143293, 160151, 286586, 320302, 573172, 640604, 1146344, 1281208, 2722567, 5445134, 10890268, 21780536]

約数ペア:

[(1, 21780536), (2, 10890268), (4, 5445134), (8, 2722567), (17, 1281208), (19, 1146344), (34, 640604), (38, 573172), (68, 320302), (76, 286586), (136, 160151), (152, 143293), (323, 67432), (646, 33716), (1292, 16858), (2584, 8429)]