15779975

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{239}}^1$

素因数の和:407

約数の個数: 24

約数和(自身を含む): 20832000

約数和(自身を除く): 5052025

約数列:

[1, 5, 19, 25, 95, 139, 239, 475, 695, 1195, 2641, 3475, 4541, 5975, 13205, 22705, 33221, 66025, 113525, 166105, 631199, 830525, 3155995, 15779975]

約数ペア:

[(1, 15779975), (5, 3155995), (19, 830525), (25, 631199), (95, 166105), (139, 113525), (239, 66025), (475, 33221), (695, 22705), (1195, 13205), (2641, 5975), (3475, 4541)]