21110859

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{743}}^1$

素因数の和:808

約数の個数: 48

約数和(自身を含む): 38997504

約数和(自身を除く): 17886645

約数列:

[1, 3, 7, 9, 11, 21, 33, 41, 63, 77, 99, 123, 231, 287, 369, 451, 693, 743, 861, 1353, 2229, 2583, 3157, 4059, 5201, 6687, 8173, 9471, 15603, 24519, 28413, 30463, 46809, 57211, 73557, 91389, 171633, 213241, 274167, 335093, 514899, 639723, 1005279, 1919169, 2345651, 3015837, 7036953, 21110859]

約数ペア:

[(1, 21110859), (3, 7036953), (7, 3015837), (9, 2345651), (11, 1919169), (21, 1005279), (33, 639723), (41, 514899), (63, 335093), (77, 274167), (99, 213241), (123, 171633), (231, 91389), (287, 73557), (369, 57211), (451, 46809), (693, 30463), (743, 28413), (861, 24519), (1353, 15603), (2229, 9471), (2583, 8173), (3157, 6687), (4059, 5201)]