21007539

素因数分解:

$3^3\times 7^1\times {\mathrm{41}}^1\times {\mathrm{2711}}^1$

素因数の和:2768

約数の個数: 32

約数和(自身を含む): 36449280

約数和(自身を除く): 15441741

約数列:

[1, 3, 7, 9, 21, 27, 41, 63, 123, 189, 287, 369, 861, 1107, 2583, 2711, 7749, 8133, 18977, 24399, 56931, 73197, 111151, 170793, 333453, 512379, 778057, 1000359, 2334171, 3001077, 7002513, 21007539]

約数ペア:

[(1, 21007539), (3, 7002513), (7, 3001077), (9, 2334171), (21, 1000359), (27, 778057), (41, 512379), (63, 333453), (123, 170793), (189, 111151), (287, 73197), (369, 56931), (861, 24399), (1107, 18977), (2583, 8133), (2711, 7749)]