28380821

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{251}}^1\times {\mathrm{557}}^1$

素因数の和:844

約数の個数: 16

約数和(自身を含む): 33747840

約数和(自身を除く): 5367019

約数列:

[1, 7, 29, 203, 251, 557, 1757, 3899, 7279, 16153, 50953, 113071, 139807, 978649, 4054403, 28380821]

約数ペア:

[(1, 28380821), (7, 4054403), (29, 978649), (203, 139807), (251, 113071), (557, 50953), (1757, 16153), (3899, 7279)]