21698859

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{1303}}^1$

素因数の和:1387

約数の個数: 32

約数和(自身を含む): 36219904

約数和(自身を除く): 14521045

約数列:

[1, 3, 7, 13, 21, 39, 61, 91, 183, 273, 427, 793, 1281, 1303, 2379, 3909, 5551, 9121, 16653, 16939, 27363, 50817, 79483, 118573, 238449, 355719, 556381, 1033279, 1669143, 3099837, 7232953, 21698859]

約数ペア:

[(1, 21698859), (3, 7232953), (7, 3099837), (13, 1669143), (21, 1033279), (39, 556381), (61, 355719), (91, 238449), (183, 118573), (273, 79483), (427, 50817), (793, 27363), (1281, 16939), (1303, 16653), (2379, 9121), (3909, 5551)]