21781382

素因数分解:

$2^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{6007}}^1$

素因数の和:6060

約数の個数: 24

約数和(自身を含む): 39039984

約数和(自身を除く): 17258602

約数列:

[1, 2, 7, 14, 37, 49, 74, 98, 259, 518, 1813, 3626, 6007, 12014, 42049, 84098, 222259, 294343, 444518, 588686, 1555813, 3111626, 10890691, 21781382]

約数ペア:

[(1, 21781382), (2, 10890691), (7, 3111626), (14, 1555813), (37, 588686), (49, 444518), (74, 294343), (98, 222259), (259, 84098), (518, 42049), (1813, 12014), (3626, 6007)]