20387961

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{2039}}^1$

素因数の和:2157

約数の個数: 24

約数和(自身を含む): 32460480

約数和(自身を除く): 12072519

約数列:

[1, 3, 9, 11, 33, 99, 101, 303, 909, 1111, 2039, 3333, 6117, 9999, 18351, 22429, 67287, 201861, 205939, 617817, 1853451, 2265329, 6795987, 20387961]

約数ペア:

[(1, 20387961), (3, 6795987), (9, 2265329), (11, 1853451), (33, 617817), (99, 205939), (101, 201861), (303, 67287), (909, 22429), (1111, 18351), (2039, 9999), (3333, 6117)]