21771477

素因数分解:

$3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{8861}}^1$

素因数の和:8890

約数の個数: 32

約数和(自身を含む): 39701760

約数和(自身を除く): 17930283

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 63, 91, 117, 189, 273, 351, 819, 2457, 8861, 26583, 62027, 79749, 115193, 186081, 239247, 345579, 558243, 806351, 1036737, 1674729, 2419053, 3110211, 7257159, 21771477]

約数ペア:

[(1, 21771477), (3, 7257159), (7, 3110211), (9, 2419053), (13, 1674729), (21, 1036737), (27, 806351), (39, 558243), (63, 345579), (91, 239247), (117, 186081), (189, 115193), (273, 79749), (351, 62027), (819, 26583), (2457, 8861)]