21649072

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{661}}^1$

素因数の和:781

約数の個数: 40

約数和(自身を含む): 44327520

約数和(自身を除く): 22678448

約数列:

[1, 2, 4, 8, 16, 23, 46, 89, 92, 178, 184, 356, 368, 661, 712, 1322, 1424, 2047, 2644, 4094, 5288, 8188, 10576, 15203, 16376, 30406, 32752, 58829, 60812, 117658, 121624, 235316, 243248, 470632, 941264, 1353067, 2706134, 5412268, 10824536, 21649072]

約数ペア:

[(1, 21649072), (2, 10824536), (4, 5412268), (8, 2706134), (16, 1353067), (23, 941264), (46, 470632), (89, 243248), (92, 235316), (178, 121624), (184, 117658), (356, 60812), (368, 58829), (661, 32752), (712, 30406), (1322, 16376), (1424, 15203), (2047, 10576), (2644, 8188), (4094, 5288)]