19849145

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{1621}}^1$

素因数の和:1736

約数の個数: 16

約数和(自身を含む): 24913920

約数和(自身を除く): 5064775

約数列:

[1, 5, 31, 79, 155, 395, 1621, 2449, 8105, 12245, 50251, 128059, 251255, 640295, 3969829, 19849145]

約数ペア:

[(1, 19849145), (5, 3969829), (31, 640295), (79, 251255), (155, 128059), (395, 50251), (1621, 12245), (2449, 8105)]