20370987

素因数分解:

$3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{8291}}^1$

素因数の和:8320

約数の個数: 32

約数和(自身を含む): 37148160

約数和(自身を除く): 16777173

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 63, 91, 117, 189, 273, 351, 819, 2457, 8291, 24873, 58037, 74619, 107783, 174111, 223857, 323349, 522333, 754481, 970047, 1566999, 2263443, 2910141, 6790329, 20370987]

約数ペア:

[(1, 20370987), (3, 6790329), (7, 2910141), (9, 2263443), (13, 1566999), (21, 970047), (27, 754481), (39, 522333), (63, 323349), (91, 223857), (117, 174111), (189, 107783), (273, 74619), (351, 58037), (819, 24873), (2457, 8291)]