21579831

素因数分解:

$3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{8783}}^1$

素因数の和:8812

約数の個数: 32

約数和(自身を含む): 39352320

約数和(自身を除く): 17772489

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 63, 91, 117, 189, 273, 351, 819, 2457, 8783, 26349, 61481, 79047, 114179, 184443, 237141, 342537, 553329, 799253, 1027611, 1659987, 2397759, 3082833, 7193277, 21579831]

約数ペア:

[(1, 21579831), (3, 7193277), (7, 3082833), (9, 2397759), (13, 1659987), (21, 1027611), (27, 799253), (39, 553329), (63, 342537), (91, 237141), (117, 184443), (189, 114179), (273, 79047), (351, 61481), (819, 26349), (2457, 8783)]